New upstream version 4.19upstream/4.19

22 files changed, 425 insertions, 559 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
index ac68f74..676cd73 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -5,15 +5,11 @@ AM_CFLAGS   = ${regular_CFLAGS}
 AM_CXXFLAGS = ${regular_CXXFLAGS}
 
 lib_LTLIBRARIES  = libHX.la
-if HAVE_DLFCN_H
-lib_LTLIBRARIES += libHX_rtcheck.la
-endif
-
 libHX_la_SOURCES = deque.c dl.c format.c io.c map.c \
                    mc.c misc.c opt.c proc.c \
                    rand.c socket.c string.c time.c
 libHX_la_LIBADD  = ${libdl_LIBS} -lm ${libpthread_LIBS} ${librt_LIBS} ${libsocket_LIBS}
-libHX_la_LDFLAGS = -no-undefined -version-info 38:0:6
+libHX_la_LDFLAGS = -no-undefined -version-info 39:0:7
 if WITH_GNU_LD
 libHX_la_LDFLAGS += -Wl,--version-script=${srcdir}/libHX.map
 endif
@@ -24,21 +20,14 @@ libHX_la_SOURCES += ux-file.c ux-mmap.c
 libHX_la_LIBADD += -lws2_32
 endif
 
-libHX_rtcheck_la_SOURCES = rtcheck.c
-libHX_rtcheck_la_LIBADD  = ${libdl_LIBS}
-libHX_rtcheck_la_LDFLAGS = -no-undefined -avoid-version -module
-if WITH_GNU_LD
-libHX_rtcheck_la_LDFLAGS += -Wl,--version-script=${srcdir}/libHX.map
-endif
-
-EXTRA_DIST = internal.h map_int.h libHX.map
+EXTRA_DIST = internal.h map_int.h libHX.map uxcompat.h analyze.sh
 
 check_PROGRAMS     = tc-compile tc-cast tc-deque tc-dir tc-format tc-io \
                      tc-list tc-list2 tc-map tc-memmem tc-misc tc-netio \
                      tc-option tc-proc tc-rand tc-realpath \
                      tc-shconfig tc-socket tc-strchr2 tc-string tc-strquote \
                      tc-switchuser tc-time
-TESTS              = tc-format tc-strchr2 tc-strquote
+TESTS              = tc-format tc-option tc-strchr2 tc-string tc-strquote
 tc_cast_CFLAGS     = ${AM_CFLAGS} -std=gnu99
 tc_cast_LDADD      = libHX.la -lm
 tc_compile_LDADD   = libHX.la
diff --git a/src/Makefile.in b/src/Makefile.in
index d349749..7e1bd81 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -90,11 +90,9 @@ PRE_UNINSTALL = :
 POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
-@HAVE_DLFCN_H_TRUE@am__append_1 = libHX_rtcheck.la
-@WITH_GNU_LD_TRUE@am__append_2 = -Wl,--version-script=${srcdir}/libHX.map
-@MINGW32_TRUE@am__append_3 = ux-file.c ux-mmap.c
-@MINGW32_TRUE@am__append_4 = -lws2_32
-@WITH_GNU_LD_TRUE@am__append_5 = -Wl,--version-script=${srcdir}/libHX.map
+@WITH_GNU_LD_TRUE@am__append_1 = -Wl,--version-script=${srcdir}/libHX.map
+@MINGW32_TRUE@am__append_2 = ux-file.c ux-mmap.c
+@MINGW32_TRUE@am__append_3 = -lws2_32
 check_PROGRAMS = tc-compile$(EXEEXT) tc-cast$(EXEEXT) \
 	tc-deque$(EXEEXT) tc-dir$(EXEEXT) tc-format$(EXEEXT) \
 	tc-io$(EXEEXT) tc-list$(EXEEXT) tc-list2$(EXEEXT) \
@@ -104,15 +102,15 @@ check_PROGRAMS = tc-compile$(EXEEXT) tc-cast$(EXEEXT) \
 	tc-socket$(EXEEXT) tc-strchr2$(EXEEXT) tc-string$(EXEEXT) \
 	tc-strquote$(EXEEXT) tc-switchuser$(EXEEXT) tc-time$(EXEEXT) \
 	$(am__EXEEXT_1)
-TESTS = tc-format$(EXEEXT) tc-strchr2$(EXEEXT) tc-strquote$(EXEEXT) \
-	$(am__EXEEXT_2)
-@HAVE_CXX_TRUE@am__append_6 = tx-compile tx-cast tx-deque tx-dir \
+TESTS = tc-format$(EXEEXT) tc-option$(EXEEXT) tc-strchr2$(EXEEXT) \
+	tc-string$(EXEEXT) tc-strquote$(EXEEXT) $(am__EXEEXT_2)
+@HAVE_CXX_TRUE@am__append_4 = tx-compile tx-cast tx-deque tx-dir \
 @HAVE_CXX_TRUE@                     tx-intdiff tx-list tx-list2 \
 @HAVE_CXX_TRUE@                     tx-misc tx-netio \
 @HAVE_CXX_TRUE@                     tx-option tx-proc tx-rand tx-strchr2 tx-string \
 @HAVE_CXX_TRUE@                     tx-strquote tx-time
 
-@HAVE_CXX_TRUE@am__append_7 = tx-strchr2 tx-strquote
+@HAVE_CXX_TRUE@am__append_5 = tx-strchr2 tx-strquote
 subdir = src
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/m4/gcc4_visibility.m4 \
@@ -182,14 +180,6 @@ am__v_lt_1 =
 libHX_la_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
 	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
 	$(libHX_la_LDFLAGS) $(LDFLAGS) -o $@
-libHX_rtcheck_la_DEPENDENCIES = $(am__DEPENDENCIES_1)
-am_libHX_rtcheck_la_OBJECTS = rtcheck.lo
-libHX_rtcheck_la_OBJECTS = $(am_libHX_rtcheck_la_OBJECTS)
-libHX_rtcheck_la_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC \
-	$(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=link $(CCLD) \
-	$(AM_CFLAGS) $(CFLAGS) $(libHX_rtcheck_la_LDFLAGS) $(LDFLAGS) \
-	-o $@
-@HAVE_DLFCN_H_TRUE@am_libHX_rtcheck_la_rpath = -rpath $(libdir)
 tc_cast_SOURCES = tc-cast.c
 tc_cast_OBJECTS = tc_cast-tc-cast.$(OBJEXT)
 tc_cast_DEPENDENCIES = libHX.la
@@ -351,19 +341,18 @@ am__depfiles_remade = ./$(DEPDIR)/deque.Plo ./$(DEPDIR)/dl.Plo \
 	./$(DEPDIR)/format.Plo ./$(DEPDIR)/io.Plo ./$(DEPDIR)/map.Plo \
 	./$(DEPDIR)/mc.Plo ./$(DEPDIR)/misc.Plo ./$(DEPDIR)/opt.Plo \
 	./$(DEPDIR)/proc.Plo ./$(DEPDIR)/rand.Plo \
-	./$(DEPDIR)/rtcheck.Plo ./$(DEPDIR)/socket.Plo \
-	./$(DEPDIR)/string.Plo ./$(DEPDIR)/tc-compile.Po \
-	./$(DEPDIR)/tc-deque.Po ./$(DEPDIR)/tc-dir.Po \
-	./$(DEPDIR)/tc-format.Po ./$(DEPDIR)/tc-io.Po \
-	./$(DEPDIR)/tc-list.Po ./$(DEPDIR)/tc-map.Po \
-	./$(DEPDIR)/tc-memmem.Po ./$(DEPDIR)/tc-misc.Po \
-	./$(DEPDIR)/tc-netio.Po ./$(DEPDIR)/tc-option.Po \
-	./$(DEPDIR)/tc-proc.Po ./$(DEPDIR)/tc-rand.Po \
-	./$(DEPDIR)/tc-realpath.Po ./$(DEPDIR)/tc-shconfig.Po \
-	./$(DEPDIR)/tc-socket.Po ./$(DEPDIR)/tc-strchr2.Po \
-	./$(DEPDIR)/tc-string.Po ./$(DEPDIR)/tc-strquote.Po \
-	./$(DEPDIR)/tc-switchuser.Po ./$(DEPDIR)/tc-time.Po \
-	./$(DEPDIR)/tc_cast-tc-cast.Po \
+	./$(DEPDIR)/socket.Plo ./$(DEPDIR)/string.Plo \
+	./$(DEPDIR)/tc-compile.Po ./$(DEPDIR)/tc-deque.Po \
+	./$(DEPDIR)/tc-dir.Po ./$(DEPDIR)/tc-format.Po \
+	./$(DEPDIR)/tc-io.Po ./$(DEPDIR)/tc-list.Po \
+	./$(DEPDIR)/tc-map.Po ./$(DEPDIR)/tc-memmem.Po \
+	./$(DEPDIR)/tc-misc.Po ./$(DEPDIR)/tc-netio.Po \
+	./$(DEPDIR)/tc-option.Po ./$(DEPDIR)/tc-proc.Po \
+	./$(DEPDIR)/tc-rand.Po ./$(DEPDIR)/tc-realpath.Po \
+	./$(DEPDIR)/tc-shconfig.Po ./$(DEPDIR)/tc-socket.Po \
+	./$(DEPDIR)/tc-strchr2.Po ./$(DEPDIR)/tc-string.Po \
+	./$(DEPDIR)/tc-strquote.Po ./$(DEPDIR)/tc-switchuser.Po \
+	./$(DEPDIR)/tc-time.Po ./$(DEPDIR)/tc_cast-tc-cast.Po \
 	./$(DEPDIR)/tc_list2-tc-list2.Po ./$(DEPDIR)/time.Plo \
 	./$(DEPDIR)/tx-cast.Po ./$(DEPDIR)/tx-compile.Po \
 	./$(DEPDIR)/tx-deque.Po ./$(DEPDIR)/tx-dir.Po \
@@ -411,31 +400,31 @@ AM_V_CXXLD = $(am__v_CXXLD_@AM_V@)
 am__v_CXXLD_ = $(am__v_CXXLD_@AM_DEFAULT_V@)
 am__v_CXXLD_0 = @echo "  CXXLD   " $@;
 am__v_CXXLD_1 = 
-SOURCES = $(libHX_la_SOURCES) $(libHX_rtcheck_la_SOURCES) tc-cast.c \
-	tc-compile.c tc-deque.c tc-dir.c tc-format.c tc-io.c tc-list.c \
-	tc-list2.c tc-map.c tc-memmem.c tc-misc.c tc-netio.c \
-	tc-option.c tc-proc.c tc-rand.c tc-realpath.c tc-shconfig.c \
-	tc-socket.c tc-strchr2.c tc-string.c tc-strquote.c \
-	tc-switchuser.c tc-time.c $(tx_cast_SOURCES) \
-	$(tx_compile_SOURCES) $(tx_deque_SOURCES) $(tx_dir_SOURCES) \
-	$(tx_intdiff_SOURCES) $(tx_list_SOURCES) $(tx_list2_SOURCES) \
-	$(tx_misc_SOURCES) $(tx_netio_SOURCES) $(tx_option_SOURCES) \
-	$(tx_proc_SOURCES) $(tx_rand_SOURCES) $(tx_strchr2_SOURCES) \
-	$(tx_string_SOURCES) $(tx_strquote_SOURCES) $(tx_time_SOURCES)
-DIST_SOURCES = $(am__libHX_la_SOURCES_DIST) \
-	$(libHX_rtcheck_la_SOURCES) tc-cast.c tc-compile.c tc-deque.c \
+SOURCES = $(libHX_la_SOURCES) tc-cast.c tc-compile.c tc-deque.c \
 	tc-dir.c tc-format.c tc-io.c tc-list.c tc-list2.c tc-map.c \
 	tc-memmem.c tc-misc.c tc-netio.c tc-option.c tc-proc.c \
 	tc-rand.c tc-realpath.c tc-shconfig.c tc-socket.c tc-strchr2.c \
 	tc-string.c tc-strquote.c tc-switchuser.c tc-time.c \
-	$(am__tx_cast_SOURCES_DIST) $(am__tx_compile_SOURCES_DIST) \
-	$(am__tx_deque_SOURCES_DIST) $(am__tx_dir_SOURCES_DIST) \
-	$(am__tx_intdiff_SOURCES_DIST) $(am__tx_list_SOURCES_DIST) \
-	$(am__tx_list2_SOURCES_DIST) $(am__tx_misc_SOURCES_DIST) \
-	$(am__tx_netio_SOURCES_DIST) $(am__tx_option_SOURCES_DIST) \
-	$(am__tx_proc_SOURCES_DIST) $(am__tx_rand_SOURCES_DIST) \
-	$(am__tx_strchr2_SOURCES_DIST) $(am__tx_string_SOURCES_DIST) \
-	$(am__tx_strquote_SOURCES_DIST) $(am__tx_time_SOURCES_DIST)
+	$(tx_cast_SOURCES) $(tx_compile_SOURCES) $(tx_deque_SOURCES) \
+	$(tx_dir_SOURCES) $(tx_intdiff_SOURCES) $(tx_list_SOURCES) \
+	$(tx_list2_SOURCES) $(tx_misc_SOURCES) $(tx_netio_SOURCES) \
+	$(tx_option_SOURCES) $(tx_proc_SOURCES) $(tx_rand_SOURCES) \
+	$(tx_strchr2_SOURCES) $(tx_string_SOURCES) \
+	$(tx_strquote_SOURCES) $(tx_time_SOURCES)
+DIST_SOURCES = $(am__libHX_la_SOURCES_DIST) tc-cast.c tc-compile.c \
+	tc-deque.c tc-dir.c tc-format.c tc-io.c tc-list.c tc-list2.c \
+	tc-map.c tc-memmem.c tc-misc.c tc-netio.c tc-option.c \
+	tc-proc.c tc-rand.c tc-realpath.c tc-shconfig.c tc-socket.c \
+	tc-strchr2.c tc-string.c tc-strquote.c tc-switchuser.c \
+	tc-time.c $(am__tx_cast_SOURCES_DIST) \
+	$(am__tx_compile_SOURCES_DIST) $(am__tx_deque_SOURCES_DIST) \
+	$(am__tx_dir_SOURCES_DIST) $(am__tx_intdiff_SOURCES_DIST) \
+	$(am__tx_list_SOURCES_DIST) $(am__tx_list2_SOURCES_DIST) \
+	$(am__tx_misc_SOURCES_DIST) $(am__tx_netio_SOURCES_DIST) \
+	$(am__tx_option_SOURCES_DIST) $(am__tx_proc_SOURCES_DIST) \
+	$(am__tx_rand_SOURCES_DIST) $(am__tx_strchr2_SOURCES_DIST) \
+	$(am__tx_string_SOURCES_DIST) $(am__tx_strquote_SOURCES_DIST) \
+	$(am__tx_time_SOURCES_DIST)
 am__can_run_installinfo = \
   case $$AM_UPDATE_INFO_DIR in \
     n|no|NO) false;; \
@@ -672,6 +661,7 @@ EGREP = @EGREP@
 ETAGS = @ETAGS@
 EXEEXT = @EXEEXT@
 FGREP = @FGREP@
+FILECMD = @FILECMD@
 GREP = @GREP@
 INSTALL = @INSTALL@
 INSTALL_DATA = @INSTALL_DATA@
@@ -775,18 +765,14 @@ top_srcdir = @top_srcdir@
 AM_CPPFLAGS = ${regular_CPPFLAGS} -I${top_srcdir}/include
 AM_CFLAGS = ${regular_CFLAGS}
 AM_CXXFLAGS = ${regular_CXXFLAGS}
-lib_LTLIBRARIES = libHX.la $(am__append_1)
+lib_LTLIBRARIES = libHX.la
 libHX_la_SOURCES = deque.c dl.c format.c io.c map.c mc.c misc.c opt.c \
-	proc.c rand.c socket.c string.c time.c $(am__append_3)
+	proc.c rand.c socket.c string.c time.c $(am__append_2)
 libHX_la_LIBADD = ${libdl_LIBS} -lm ${libpthread_LIBS} ${librt_LIBS} \
-	${libsocket_LIBS} $(am__append_4)
-libHX_la_LDFLAGS = -no-undefined -version-info 38:0:6 $(am__append_2)
+	${libsocket_LIBS} $(am__append_3)
+libHX_la_LDFLAGS = -no-undefined -version-info 39:0:7 $(am__append_1)
 EXTRA_libHX_la_DEPENDENCIES = libHX.map
-libHX_rtcheck_la_SOURCES = rtcheck.c
-libHX_rtcheck_la_LIBADD = ${libdl_LIBS}
-libHX_rtcheck_la_LDFLAGS = -no-undefined -avoid-version -module \
-	$(am__append_5)
-EXTRA_DIST = internal.h map_int.h libHX.map
+EXTRA_DIST = internal.h map_int.h libHX.map uxcompat.h analyze.sh
 tc_cast_CFLAGS = ${AM_CFLAGS} -std=gnu99
 tc_cast_LDADD = libHX.la -lm
 tc_compile_LDADD = libHX.la
@@ -923,9 +909,6 @@ clean-libLTLIBRARIES:
 libHX.la: $(libHX_la_OBJECTS) $(libHX_la_DEPENDENCIES) $(EXTRA_libHX_la_DEPENDENCIES) 
 	$(AM_V_CCLD)$(libHX_la_LINK) -rpath $(libdir) $(libHX_la_OBJECTS) $(libHX_la_LIBADD) $(LIBS)
 
-libHX_rtcheck.la: $(libHX_rtcheck_la_OBJECTS) $(libHX_rtcheck_la_DEPENDENCIES) $(EXTRA_libHX_rtcheck_la_DEPENDENCIES) 
-	$(AM_V_CCLD)$(libHX_rtcheck_la_LINK) $(am_libHX_rtcheck_la_rpath) $(libHX_rtcheck_la_OBJECTS) $(libHX_rtcheck_la_LIBADD) $(LIBS)
-
 tc-cast$(EXEEXT): $(tc_cast_OBJECTS) $(tc_cast_DEPENDENCIES) $(EXTRA_tc_cast_DEPENDENCIES) 
 	@rm -f tc-cast$(EXEEXT)
 	$(AM_V_CCLD)$(tc_cast_LINK) $(tc_cast_OBJECTS) $(tc_cast_LDADD) $(LIBS)
@@ -1098,7 +1081,6 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/opt.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/proc.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/rand.Plo@am__quote@ # am--include-marker
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/rtcheck.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/socket.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/string.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tc-compile.Po@am__quote@ # am--include-marker
@@ -1446,6 +1428,13 @@ tc-format.log: tc-format$(EXEEXT)
 	--log-file $$b.log --trs-file $$b.trs \
 	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
 	"$$tst" $(AM_TESTS_FD_REDIRECT)
+tc-option.log: tc-option$(EXEEXT)
+	@p='tc-option$(EXEEXT)'; \
+	b='tc-option'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
 tc-strchr2.log: tc-strchr2$(EXEEXT)
 	@p='tc-strchr2$(EXEEXT)'; \
 	b='tc-strchr2'; \
@@ -1453,6 +1442,13 @@ tc-strchr2.log: tc-strchr2$(EXEEXT)
 	--log-file $$b.log --trs-file $$b.trs \
 	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
 	"$$tst" $(AM_TESTS_FD_REDIRECT)
+tc-string.log: tc-string$(EXEEXT)
+	@p='tc-string$(EXEEXT)'; \
+	b='tc-string'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
 tc-strquote.log: tc-strquote$(EXEEXT)
 	@p='tc-strquote$(EXEEXT)'; \
 	b='tc-strquote'; \
@@ -1581,7 +1577,6 @@ distclean: distclean-am
 	-rm -f ./$(DEPDIR)/opt.Plo
 	-rm -f ./$(DEPDIR)/proc.Plo
 	-rm -f ./$(DEPDIR)/rand.Plo
-	-rm -f ./$(DEPDIR)/rtcheck.Plo
 	-rm -f ./$(DEPDIR)/socket.Plo
 	-rm -f ./$(DEPDIR)/string.Plo
 	-rm -f ./$(DEPDIR)/tc-compile.Po
@@ -1681,7 +1676,6 @@ maintainer-clean: maintainer-clean-am
 	-rm -f ./$(DEPDIR)/opt.Plo
 	-rm -f ./$(DEPDIR)/proc.Plo
 	-rm -f ./$(DEPDIR)/rand.Plo
-	-rm -f ./$(DEPDIR)/rtcheck.Plo
 	-rm -f ./$(DEPDIR)/socket.Plo
 	-rm -f ./$(DEPDIR)/string.Plo
 	-rm -f ./$(DEPDIR)/tc-compile.Po
diff --git a/src/analyze.sh b/src/analyze.sh
new file mode 100755
index 0000000..042998f
--- /dev/null
+++ b/src/analyze.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+f="--analyze -Xanalyzer -analyzer-output=text -Wall -g3"
+make -k check CC=clang CXX=clang++ CFLAGS="$f" CXXFLAGS="$f"
diff --git a/src/internal.h b/src/internal.h
index 0465d81..f7d83d8 100644
--- a/src/internal.h
+++ b/src/internal.h
@@ -11,15 +11,12 @@
 
 #include "config.h"
 #include <stdint.h>
+#include <libHX/cast.h>
 #include <libHX/defs.h>
 #include <libHX/string.h>
 
 #ifdef __cplusplus
 	/* Only for our dual C/C++ testsuites */
-#	define const_cast(type, expr)       const_cast<type>(expr)
-#	define const_cast1(type, expr)      const_cast<type>(expr)
-#	define const_cast2(type, expr)      const_cast<type>(expr)
-#	define const_cast3(type, expr)      const_cast<type>(expr)
 #	define dynamic_cast(type, expr)     dynamic_cast<type>(expr)
 #	define signed_cast(type, expr)      signed_cast<type>(expr)
 #	define reinterpret_cast(type, expr) reinterpret_cast<type>(expr)
diff --git a/src/libHX.map b/src/libHX.map
index 37bfe0f..374a881 100644
--- a/src/libHX.map
+++ b/src/libHX.map
@@ -178,3 +178,8 @@ LIBHX_4.16 {
 global:
 	HX_strtoull_nsec;
 } LIBHX_4.15;
+
+LIBHX_4.18 {
+global:
+	HX_getopt5;
+} LIBHX_4.16;
diff --git a/src/opt.c b/src/opt.c
index f91785d..ab482ad 100644
--- a/src/opt.c
+++ b/src/opt.c
@@ -20,6 +20,7 @@
 #include <libHX/misc.h>
 #include <libHX/option.h>
 #include <libHX/string.h>
+#undef HX_getopt
 #include "internal.h"
 
 /* Definitions */
@@ -697,16 +698,19 @@ static int HX_getopt_normal(const char *cur, const struct HX_getopt_vars *par)
 	return HXOPT_S_NORMAL | HXOPT_I_ADVARG;
 }
 
-EXPORT_SYMBOL int HX_getopt(const struct HXoption *table, int *argc,
-    const char ***argv, unsigned int flags)
+EXPORT_SYMBOL int HX_getopt5(const struct HXoption *table, char **orig_argv,
+    int *new_argc, char ***new_argv, unsigned int flags)
 {
 	struct HX_getopt_vars ps;
-	const char **opt = *argv;
+	const char **opt = const_cast(const char **, orig_argv);
 	int state = HXOPT_S_NORMAL;
 	int ret = -ENOMEM;
-	unsigned int argk;
-	const char *cur;
+	unsigned int argk = 0;
 
+	if (new_argc != nullptr)
+		*new_argc = 0;
+	if (new_argv != nullptr)
+		*new_argv = nullptr;
 	memset(&ps, 0, sizeof(ps));
 	ps.remaining = HXdeque_init();
 	if (ps.remaining == NULL) {
@@ -714,7 +718,7 @@ EXPORT_SYMBOL int HX_getopt(const struct HXoption *table, int *argc,
 		goto out;
 	}
 	ps.flags = flags;
-	ps.arg0  = **argv;
+	ps.arg0  = *opt;
 	ps.cbi.table = table;
 
 	if (*opt != NULL) {
@@ -733,7 +737,7 @@ EXPORT_SYMBOL int HX_getopt(const struct HXoption *table, int *argc,
 
 	if (posix_me_harder())
 		ps.flags |= HXOPT_RQ_ORDER;
-	for (cur = *opt; cur != NULL; ) {
+	for (const char *cur = *opt; cur != NULL; ) {
 		if (state == HXOPT_S_TWOLONG)
 			state = HX_getopt_twolong(opt, &ps);
 		else if (state == HXOPT_S_LONG)
@@ -764,33 +768,19 @@ EXPORT_SYMBOL int HX_getopt(const struct HXoption *table, int *argc,
 		state &= ~HXOPT_I_MASK;
 	}
 
-	if (!(ps.flags & HXOPT_KEEP_ARGV)) {
-		const char **nvec = reinterpret_cast(const char **,
-		                    HXdeque_to_vec(ps.remaining, &argk));
-		if (nvec == NULL) {
+	if (new_argv != nullptr) {
+		*new_argv = reinterpret_cast(char **, HXdeque_to_vec(ps.remaining, &argk));
+		if (*new_argv == nullptr) {
 			ret = -errno;
 			goto out;
 		}
-		if (ps.flags & HXOPT_DESTROY_OLD)
-			/*
-			 * Only the "true, original" argv is stored on the
-			 * stack - the argv that HX_getopt() produces is on
-			 * the heap, so the %HXOPT_DESTROY_OLD flag should be
-			 * passed when you use passthrough chaining, i.e. all
-			 * but the first call to HX_getopt() should have this
-			 * set.
-			 */
-			HX_zvecfree(const_cast2(char **, *argv));
-
-		*argv = nvec;
-		if (argc != NULL)
-			*argc = argk;
-		/* pointers are owned by nvec/argv now */
+		if (new_argc != nullptr)
+			*new_argc = argk;
+		/* pointers are owned by new_argv now, so free only the deque head */
 		HXdeque_free(ps.remaining);
 		ps.remaining = nullptr;
 	}
 	ret = HXOPT_ERR_SUCCESS;
-
  out:
 	if (ret == HXOPT_ERR_SUCCESS) {
 	} else if (ret < 0) {
@@ -808,6 +798,26 @@ EXPORT_SYMBOL int HX_getopt(const struct HXoption *table, int *argc,
 	return ret;
 }
 
+EXPORT_SYMBOL int HX_getopt(const struct HXoption *table, int *argc,
+    char ***argv, unsigned int flags)
+{
+	int new_argc = 0;
+	char **new_argv = nullptr;
+	int ret = HX_getopt5(table, *argv, &new_argc,
+	          flags & HXOPT_KEEP_ARGV ? nullptr : &new_argv, flags);
+	if (ret != HXOPT_ERR_SUCCESS)
+		return ret;
+	if (flags & HXOPT_KEEP_ARGV)
+		// NO_CREATE_NEW / DESTROY_NEW
+		new_argv = *argv;
+	else if (flags & HXOPT_DESTROY_OLD)
+		HX_zvecfree(*argv);
+	if (argc != nullptr)
+		*argc = new_argc;
+	*argv = new_argv;
+	return ret;
+}
+
 EXPORT_SYMBOL void HX_getopt_help(const struct HXoptcb *cbi, FILE *nfp)
 {
 	FILE *fp = (nfp == NULL) ? stderr : nfp;
diff --git a/src/proc.c b/src/proc.c
index 801023b..c8957b6 100644
--- a/src/proc.c
+++ b/src/proc.c
@@ -103,7 +103,7 @@ EXPORT_SYMBOL enum HXproc_su_status HXproc_switch_user(const char *user, const c
 
 #else
 
-EXPORT_SYMBOL int HXproc_switch_user(const char *user, const char *group)
+EXPORT_SYMBOL enum HXproc_su_status HXproc_switch_user(const char *user, const char *group)
 {
 	return -ENOSYS;
 }
diff --git a/src/rtcheck.c b/src/rtcheck.c
deleted file mode 100644
index 6f04baa..0000000
--- a/src/rtcheck.c
+++ /dev/null
@@ -1,274 +0,0 @@
-/*
- *	Additional runtime checks
- *	Copyright Jan Engelhardt, 2011
- *
- *	This file is part of libHX. libHX is free software; you can
- *	redistribute it and/or modify it under the terms of the GNU Lesser
- *	General Public License as published by the Free Software Foundation;
- *	either version 2.1 or (at your option) any later version.
- *
- *	libHX_rtcheck.so is a library supposed to be used together with the
- *	LD_PRELOAD environment variable to dynamically add extra checks.
- */
-#define _GNU_SOURCE 1
-#ifdef HAVE_DLFCN_H
-#include <dlfcn.h>
-#ifdef RTLD_NEXT
-
-#include <pthread.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <libHX.h>
-#include "internal.h"
-
-#define call_next(f) \
-	((__typeof__(f) *)dlsym(RTLD_NEXT, #f))
-
-#define stub_head(f, args, invoke) \
-	EXPORT_SYMBOL __typeof__(f invoke) f args \
-	{ \
-		if (HXrefchk_count <= 0) \
-			fprintf(stderr, "%s: HX_init has not been called!\n", \
-			        __func__);
-
-#define stub_tail(f, params) \
-		return call_next(f) params; \
-	}
-
-#define stub(f, args, invoke, params) \
-	stub_head(f, args, invoke) \
-	stub_tail(f, params)
-
-#define stubv(f, args, params) \
-	EXPORT_SYMBOL void f args \
-	{ \
-		if (HXrefchk_count <= 0) \
-			fprintf(stderr, "%s: HX_init has not been called!\n", \
-			        __func__); \
-		call_next(f) params; \
-	}
-
-#define stub0(f)        stub(f, (void), (), ())
-#define stub1(f, args)  stub(f, args, (0), (a))
-#define stub1v(f, args) stubv(f, args, (a))
-#define stub2(f, args)  stub(f, args, (0, 0), (a, b))
-#define stub2v(f, args) stubv(f, args, (a, b))
-#define stub3(f, args)  stub(f, args, (0, 0, 0), (a, b, c))
-#define stub3v(f, args) stubv(f, args, (a, b, c))
-#define stub4(f, args)  stub(f, args, (0, 0, 0, 0), (a, b, c, d))
-#define stub5(f, args)  stub(f, args, (0, 0, 0, 0, 0), (a, b, c, d, e))
-
-static pthread_mutex_t HXrefchk_lock = PTHREAD_MUTEX_INITIALIZER;
-static unsigned long HXrefchk_count;
-
-EXPORT_SYMBOL int HX_init(void)
-{
-	/*
-	 * The real HX_init has its own reference count check, but that
-	 * variable is not exported that we could test it, so the counter needs
-	 * to be replicated here.
-	 */
-	pthread_mutex_lock(&HXrefchk_lock);
-	if (HXrefchk_count == 0) {
-		printf("# " PACKAGE_NAME " " PACKAGE_VERSION
-		       " runtime checker active\n");
-		call_next(HX_init)();
-	}
-	++HXrefchk_count;
-	pthread_mutex_unlock(&HXrefchk_lock);
-	return 1;
-}
-
-EXPORT_SYMBOL void HX_exit(void)
-{
-	pthread_mutex_lock(&HXrefchk_lock);
-	if (HXrefchk_count == 0)
-		fprintf(stderr, "%s: reference count is already zero!\n", __func__);
-	else
-		--HXrefchk_count;
-	pthread_mutex_unlock(&HXrefchk_lock);
-	call_next(HX_exit)();
-}
-
-/* deque.h */
-stub0(HXdeque_init);
-stub2(HXdeque_push, (struct HXdeque *a, const void *b));
-stub2(HXdeque_unshift, (struct HXdeque *a, const void *b));
-stub1(HXdeque_pop, (struct HXdeque *a));
-stub1(HXdeque_shift, (struct HXdeque *a));
-stub2(HXdeque_move, (struct HXdeque_node *a, struct HXdeque_node *b));
-stub2(HXdeque_find, (struct HXdeque *a, const void *b));
-stub2(HXdeque_get, (struct HXdeque *a, const void *b));
-stub1(HXdeque_del, (struct HXdeque_node *a));
-stub1v(HXdeque_free, (struct HXdeque *a));
-stub2v(HXdeque_genocide2, (struct HXdeque *a, void (*b)(void *)));
-stub2(HXdeque_to_vec, (const struct HXdeque *a, unsigned int *b));
-
-/* io.h */
-stub1(HXdir_open, (const char *a));
-stub1(HXdir_read, (struct HXdir *a));
-stub1v(HXdir_close, (struct HXdir *a));
-/* HX_copy_dir: has varargs */
-/* HX_copy_file: has varargs */
-stub2(HX_mkdir, (const char *a, unsigned int b));
-stub2(HX_readlink, (hxmc_t **a, const char *b));
-stub3(HX_realpath, (hxmc_t **a, const char *b, unsigned int c));
-stub1(HX_rrmdir, (const char *a));
-
-stub3(HXio_fullread, (int a, void *b, size_t c));
-stub3(HXio_fullwrite, (int a, const void *b, size_t c));
-
-/* map.h */
-stub2(HXmap_init, (enum HXmap_type a, unsigned int b));
-stub5(HXmap_init5, (enum HXmap_type a, unsigned int b,
-	const struct HXmap_ops *c, size_t d, size_t e));
-stub3(HXmap_add, (struct HXmap *a, const void *b, const void *c));
-stub2(HXmap_find, (const struct HXmap *a, const void *b));
-stub2(HXmap_get, (const struct HXmap *a, const void *b));
-stub2(HXmap_del, (struct HXmap *a, const void *b));
-stub1(HXmap_keysvalues, (const struct HXmap *a));
-stub2(HXmap_travinit, (const struct HXmap *a, unsigned int b));
-stub1(HXmap_traverse, (struct HXmap_trav *a));
-stub1v(HXmap_travfree, (struct HXmap_trav *a));
-stub3v(HXmap_qfe, (const struct HXmap *a,
-	bool (*b)(const struct HXmap_node *, void *), void *c));
-stub1v(HXmap_free, (struct HXmap *a));
-
-/* misc.h */
-stub1(HX_dlopen, (const char *a));
-stub2(HX_dlsym, (void *a, const char *b));
-stub1v(HX_dlclose, (void *a));
-stub0(HX_dlerror);
-
-stub1(HX_ffs, (unsigned long a));
-stub1(HX_fls, (unsigned long a));
-stub3(HX_hexdump, (FILE *a, const void *b, unsigned int c));
-stub3(HX_timespec_add, (struct timespec *a, const struct timespec *b,
-	const struct timespec *c));
-stub1(HX_timespec_isneg, (const struct timespec *a));
-stub3(HX_timespec_mul, (struct timespec *a, const struct timespec *b, int c));
-stub3(HX_timespec_mulf, (struct timespec *a, const struct timespec *b,
-	double c));
-stub2(HX_timespec_neg, (struct timespec *a, const struct timespec *b));
-stub3(HX_timespec_sub, (struct timespec *a, const struct timespec *b,
-	const struct timespec *c));
-stub3(HX_timeval_sub, (struct timeval *a, const struct timeval *b,
-	const struct timeval *c));
-stub3(HX_time_compare, (const struct stat *a, const struct stat *b, char c));
-stub1v(HX_zvecfree, (char **a));
-
-stub0(HX_rand);
-stub2(HX_irand, (unsigned int a, unsigned int b));
-stub2(HX_drand, (double a, double b));
-
-/* option.h */
-stub0(HXformat_init);
-stub1v(HXformat_free, (struct HXformat_map *a));
-stub4(HXformat_add, (struct HXformat_map *a, const char *b, const void *c,
-	unsigned int d));
-stub3(HXformat_aprintf, (const struct HXformat_map *a, hxmc_t **b,
-	const char *c));
-stub4(HXformat_sprintf, (const struct HXformat_map *a, char *b, size_t c,
-	const char *d));
-stub3(HXformat_fprintf, (const struct HXformat_map *a, FILE *b,
-	const char *c));
-
-stub4(HX_getopt, (const struct HXoption *a, int *b, const char ***c,
-	unsigned int d));
-/* HX_getopt_help: not really public */
-/* HX_getopt_help_cb: not really public */
-/* HX_getopt_usage: not really public */
-/* HX_getopt_usage_cb: not really public */
-stub2(HX_shconfig, (const char *a, const struct HXoption *b));
-stub1(HX_shconfig_map, (const char *a));
-stub4(HX_shconfig_pv, (const char **a, const char *b, const struct HXoption *c,
-	unsigned int d));
-stub1v(HX_shconfig_free, (const struct HXoption *a));
-
-/* proc.h */
-stub2(HXproc_run_async, (const char *const *a, struct HXproc *b));
-stub2(HXproc_run_sync, (const char *const *a, unsigned int b));
-stub1(HXproc_wait, (struct HXproc *a));
-
-/* string.h */
-static __inline__ struct memcont *HXmc_base(const hxmc_t *p)
-{
-	return containerof(p, struct memcont, data);
-}
-
-static __inline__ void HXmc_check(const char *func, const void *cv)
-{
-	const struct memcont *c;
-
-	if (cv == NULL)
-		return;
-	c = HXmc_base(cv);
-	if (c->id != HXMC_IDENT)
-		fprintf(stderr, "%s: %p is not a HXmc object!\n", func, cv);
-}
-
-stub1(HXmc_strinit, (const char *a));
-stub2(HXmc_meminit, (const void *a, size_t b));
-
-stub_head(HXmc_strcpy, (hxmc_t **a, const char *b), (0, 0))
-{
-	if (*a != NULL)
-		HXmc_check(__func__, *a);
-}
-stub_tail(HXmc_strcpy, (a, b))
-
-stub_head(HXmc_memcpy, (hxmc_t **a, const void *b, size_t c), (0, 0, 0))
-{
-	if (*a != NULL)
-		HXmc_check(__func__, *a);
-}
-stub_tail(HXmc_memcpy, (a, b, c))
-
-stub_head(HXmc_length, (const hxmc_t *a), (0))
-{
-	if (a != NULL)
-		HXmc_check(__func__, a);
-}
-stub_tail(HXmc_length, (a))
-
-stub2(HXmc_setlen, (hxmc_t **a, size_t b));
-stub2(HXmc_trunc, (hxmc_t **a, size_t b));
-stub2(HXmc_strcat, (hxmc_t **a, const char *b));
-stub3(HXmc_memcat, (hxmc_t **a, const void *b, size_t c));
-stub2(HXmc_strpcat, (hxmc_t **a, const char *b));
-stub3(HXmc_mempcat, (hxmc_t **a, const void *b, size_t c));
-stub3(HXmc_strins, (hxmc_t **a, size_t b, const char *c));
-stub4(HXmc_memins, (hxmc_t **a, size_t b, const void *c, size_t d));
-stub3(HXmc_memdel, (hxmc_t *a, size_t b, size_t c));
-stub1v(HXmc_free, (hxmc_t *a));
-stub1v(HXmc_zvecfree, (hxmc_t **a));
-
-stub1(HX_basename, (const char *a));
-stub1(HX_basename_exact, (const char *a));
-stub1(HX_chomp, (char *a));
-stub1(HX_dirname, (const char *a));
-stub2(HX_getl, (hxmc_t **a, FILE *b));
-stub4(HX_memmem, (const void *a, size_t b, const void *c, size_t d));
-stub4(HX_split, (const char *a, const char *b, int *c, int d));
-stub4(HX_split_inplace, (char *a, const char *b, int *c, int d));
-stub4(HX_split_fixed, (char *a, const char *b, int c, char **d));
-stub1(HX_stpltrim, (const char *a));
-stub1(HX_stprtrim, (char *a));
-stub3(HX_strbchr, (const char *a, const char *b, char c));
-stub2(HX_strclone, (char **a, const char *b));
-stub1(HX_strlower, (char *a));
-stub1(HX_strltrim, (char *a));
-stub3(HX_strmid, (const char *a, long b, long c));
-stub2(HX_strndup, (const char *a, size_t b));
-stub2(HX_strnlen, (const char *a, size_t b));
-stub3(HX_strquote, (const char *a, unsigned int b, char **c));
-stub2(HX_strrcspn, (const char *a, const char *b));
-stub1(HX_strrev, (char *a));
-stub1(HX_strrtrim, (char *a));
-stub2(HX_strsep, (char **a, const char *b));
-stub2(HX_strsep2, (char **a, const char *b));
-stub1(HX_strupper, (char *a));
-
-#endif /* RTLD_NEXT */
-#endif /* HAVE_DLFCN_H */
diff --git a/src/socket.c b/src/socket.c
index e2ad9ed..9fdd903 100644
--- a/src/socket.c
+++ b/src/socket.c
@@ -394,13 +394,15 @@ EXPORT_SYMBOL int HX_socket_from_env(const struct addrinfo *ai, const char *intf
 		}
 		top_fd = x;
 	}
-	for (int fd = 3; fd < top_fd; ++fd)
-		if (try_sk_from_env(fd, ai, intf) == fd) {
+	for (int fd = 3; fd < top_fd; ++fd) {
+		if (try_sk_from_env(fd, ai, intf) != fd)
+			continue;
 #ifdef SOCK_CLOEXEC
-			fcntl(fd, F_SETFD, fcntl(fd, F_GETFD, 0) | FD_CLOEXEC);
+		if (fcntl(fd, F_SETFD, fcntl(fd, F_GETFD, 0) | FD_CLOEXEC) != 0)
+			/* ignore */;
 #endif
-			return fd;
-		}
+		return fd;
+	}
 	errno = ENOENT;
 	return -1;
 }
diff --git a/src/string.c b/src/string.c
index 4abd694..06066ce 100644
--- a/src/string.c
+++ b/src/string.c
@@ -980,6 +980,7 @@ EXPORT_SYMBOL double HX_strtod_unit(const char *s, char **out_end, unsigned int
 	if (end == s) {
 		if (out_end != nullptr)
 			*out_end = end;
+		errno = 0;
 		return q;
 	}
 	while (HX_isspace(*end))
@@ -988,10 +989,12 @@ EXPORT_SYMBOL double HX_strtod_unit(const char *s, char **out_end, unsigned int
 	if (pwr == 0) {
 		if (out_end != nullptr)
 			*out_end = const_cast(char *, end);
+		errno = 0;
 		return q;
 	}
 	if (out_end != nullptr)
 		*out_end = const_cast(char *, end + 1);
+	errno = 0;
 	return q * pow(exponent, pwr);
 }
 
@@ -1001,17 +1004,45 @@ EXPORT_SYMBOL unsigned long long HX_strtoull_unit(const char *s,
 	char *end;
 	unsigned long long ipart;
 	unsigned int pwr = 0;
+	bool neg = false;
 
 	while (HX_isspace(*s))
 		++s;
+	if (*s == '-') {
+		/*
+		 * "-5k": While (-5ULL) * 1000 is the same as (-5000ULL) under
+		 * modulo arithmetic, the expression `ipart >= ULLONG_MAX /
+		 * exponent` depends on seeing the true value (5 rather than
+		 * (-5ULL).)
+		 */
+		neg = true;
+		++s;
+	}
+	errno = 0;
 	ipart = strtoull(s, &end, 10);
+	if (ipart == ULLONG_MAX && errno == ERANGE)
+		return ipart;
 	if (*end == '.') {
 		double q = HX_strtod_unit(s, out_end, exponent);
 		bool lo_ok = q >= nextafter(-static_cast(double, ULLONG_MAX), 0);
 		bool hi_ok = q <= nextafter(static_cast(double, ULLONG_MAX), 0);
-		if (!hi_ok || !lo_ok)
+		if (!hi_ok || !lo_ok) {
+			errno = ERANGE;
 			return ULLONG_MAX;
-		return q;
+		}
+		/*
+		 * https://eel.is/c++draft/conv.fpint: values unrepresentable
+		 * in the target type (such as forcing -5.2f into a uint) is
+		 * UB. Thus check for range and apply the negation after the
+		 * conversion to ULL.
+		 */
+		if (q > ULLONG_MAX) {
+			errno = ERANGE;
+			return ULLONG_MAX;
+		}
+		unsigned long long r = q;
+		errno = 0;
+		return neg ? -r : r;
 	}
 	if (exponent == 0)
 		exponent = 1000;
@@ -1021,7 +1052,8 @@ EXPORT_SYMBOL unsigned long long HX_strtoull_unit(const char *s,
 	if (pwr == 0) {
 		if (out_end != nullptr)
 			*out_end = end;
-		return ipart;
+		errno = 0;
+		return neg ? -ipart: ipart;
 	}
 	if (out_end != nullptr)
 		*out_end = const_cast(char *, end + 1);
@@ -1032,11 +1064,13 @@ EXPORT_SYMBOL unsigned long long HX_strtoull_unit(const char *s,
 		}
 		ipart *= exponent;
 	}
-	return ipart;
+	errno = 0;
+	return neg ? -ipart : ipart;
 }
 
-#define SECONDS_PER_YEAR 31557600
-#define SECONDS_PER_MONTH 2629800
+/* Numbers also used by systemd — the focus is on longterm averages */
+#define SECONDS_PER_YEAR 31557600 /* 365.25 days */
+#define SECONDS_PER_MONTH 2629800 /* 1/12th of that year = 30.4375 days */
 #define NSEC_PER_SECOND 1000000000ULL
 
 static const struct {
@@ -1071,7 +1105,6 @@ static const struct {
 	{"µs",      3, 0, 1000},
 	{"nsec",    4, 0, 1},
 	{"ns",      2, 0, 1},
-	{"",        0, 1, NSEC_PER_SECOND},
 };
 
 static unsigned long long HX_strtoull_time(const char *s, char **out_end, bool nsec)
@@ -1081,10 +1114,13 @@ static unsigned long long HX_strtoull_time(const char *s, char **out_end, bool n
 	while (*s != '\0') {
 		while (HX_isspace(*s))
 			++s;
+		const char *numbegin = s;
 		if (*s == '-')
 			break;
 		char *end = nullptr;
 		unsigned long long num = strtoull(s, &end, 10);
+		if (num == ULLONG_MAX && errno == ERANGE)
+			return num;
 		double frac = 0;
 		bool have_frac = *end == '.';
 		if (have_frac)
@@ -1100,13 +1136,25 @@ static unsigned long long HX_strtoull_time(const char *s, char **out_end, bool n
 			    time_multiplier[i].len) == 0 &&
 			    !HX_isalpha(s[time_multiplier[i].len]))
 				break;
-		if (i == ARRAY_SIZE(time_multiplier))
+		if (i == ARRAY_SIZE(time_multiplier)) {
+			if ((!have_frac && num == 0) || (have_frac && frac == 0))
+				/* 0 is the same no matter what unit, take it */
+				continue;
+			s = numbegin;
 			break;
+		}
 		unsigned long long mult = nsec ? time_multiplier[i].ns_mult : time_multiplier[i].s_mult;
-		if (have_frac)
+		if (have_frac) {
 			quant += frac * mult;
-		else
+		} else {
+			if (mult > 0 && num >= ULLONG_MAX / mult) {
+				if (out_end != nullptr)
+					*out_end = const_cast(char *, numbegin);
+				errno = ERANGE;
+				return ULLONG_MAX;
+			}
 			quant += num * mult;
+		}
 		s += time_multiplier[i].len;
 	}
 	if (out_end != nullptr)
diff --git a/src/tc-dir.c b/src/tc-dir.c
index ec44977..7f987bc 100644
--- a/src/tc-dir.c
+++ b/src/tc-dir.c
@@ -22,7 +22,7 @@ static void lookatdir(const char *dname)
 	HXdir_close(dh);
 }
 
-int main(int argc, const char **argv)
+int main(int argc, char **argv)
 {
 	if (HX_init() <= 0)
 		return EXIT_FAILURE;
diff --git a/src/tc-format.c b/src/tc-format.c
index ed8e6d4..5c5c6e6 100644
--- a/src/tc-format.c
+++ b/src/tc-format.c
@@ -73,7 +73,7 @@ static int t_format(int argc)
 	return EXIT_SUCCESS;
 }
 
-int main(int argc, const char **argv)
+int main(int argc, char **argv)
 {
 	int ret;
 
diff --git a/src/tc-list.c b/src/tc-list.c
index e8a30b6..d31a5c7 100644
--- a/src/tc-list.c
+++ b/src/tc-list.c
@@ -10,6 +10,7 @@
 #include <libHX/list.h>
 #include <libHX/init.h>
 #include <libHX/misc.h>
+#include "internal.h"
 
 struct text_object {
 	struct HXlist_head list;
@@ -64,13 +65,14 @@ static void l_traverse(void)
 static void l_dump(bool pop)
 {
 	static const char *const msg[] = {"Shifting", "Popping"};
-	struct text_object *obj;
 	unsigned int i = 0;
 
-	while ((obj = (pop ?
-	    HXclist_pop(&strings_ct, struct text_object, list) :
-	    HXclist_shift(&strings_ct, struct text_object, list)
-	    )) != NULL) {
+	while (true) {
+		struct text_object *obj = pop ?
+			HXclist_pop(&strings_ct, struct text_object, list) :
+			HXclist_shift(&strings_ct, struct text_object, list);
+		if (obj == nullptr)
+			break;
 		printf("%s item %u (\"%s\")\n", msg[pop], ++i, obj->id);
 #ifdef __cplusplus
 		delete obj;
@@ -138,7 +140,7 @@ static void l_shift(void)
 #pragma GCC diagnostic pop
 }
 
-static int runner(int argc, const char **argv)
+static int runner(int argc, char **argv)
 {
 	unsigned int max = 10;
 
@@ -157,10 +159,10 @@ static int runner(int argc, const char **argv)
 	return EXIT_SUCCESS;
 }
 
-int main(int argc, const char **argv)
+int main(int argc, char **argv)
 {
 	int ret = runner(argc, argv);
-	if (ret != EXIT_FAILURE)
+	if (ret == EXIT_FAILURE)
 		fprintf(stderr, "FAILED\n");
 	return ret;
 }
diff --git a/src/tc-memmem.c b/src/tc-memmem.c
index 1a56f1b..6115aec 100644
--- a/src/tc-memmem.c
+++ b/src/tc-memmem.c
@@ -78,7 +78,7 @@ static int runner(void)
 int main(void)
 {
 	int ret = runner();
-	if (ret != EXIT_FAILURE)
+	if (ret == EXIT_FAILURE)
 		fprintf(stderr, "FAILED\n");
 	return ret;
 }
diff --git a/src/tc-misc.c b/src/tc-misc.c
index d422f21..1677807 100644
--- a/src/tc-misc.c
+++ b/src/tc-misc.c
@@ -8,7 +8,7 @@
 #include <libHX/init.h>
 #include <libHX/misc.h>
 
-static int runner(int argc, const char **argv)
+static int runner(int argc, char **argv)
 {
 	unsigned int n;
 	struct stat sa, sb;
@@ -43,10 +43,10 @@ static int runner(int argc, const char **argv)
 	return EXIT_SUCCESS;
 }
 
-int main(int argc, const char **argv)
+int main(int argc, char **argv)
 {
 	int ret = runner(argc, argv);
-	if (ret != EXIT_FAILURE)
+	if (ret == EXIT_FAILURE)
 		fprintf(stderr, "FAILED\n");
 	return ret;
 }
diff --git a/src/tc-option.c b/src/tc-option.c
index 83271e0..8e99b19 100644
--- a/src/tc-option.c
+++ b/src/tc-option.c
@@ -11,6 +11,7 @@
 #include <libHX/init.h>
 #include <libHX/map.h>
 #include <libHX/option.h>
+#include "internal.h"
 
 static int opt_v = 0, opt_mask = 0;
 static char *opt_kstr = NULL;
@@ -64,45 +65,69 @@ static struct HXoption table[] = {
 	HXOPT_TABLEEND,
 };
 
-static void dump_argv(const char **v)
+static void dump_argv(char **v)
 {
 	while (*v != NULL)
 		printf("[%s] ", *v++);
 	printf("\n");
 }
 
-static void t_pthru(void)
+static int t_pthru(void)
 {
 	const char *argv[] = {
 		"ARGV0", "-Zomg", "-GZfoo", "bar",
 		"--unknown-f=13.37", "--unknown-a",
 		"foo", "bar", NULL
 	};
-	const char **argp = argv;
-	int argc = ARRAY_SIZE(argv) - 1;
+	char **nargv = nullptr;
+	int nargc = 0;
 
 	printf("PTHRU test:\n");
-	HX_getopt(table, &argc, &argp, HXOPT_USAGEONERR | HXOPT_PTHRU);
-	dump_argv(argp);
+	if (HX_getopt5(table, const_cast(char **, argv), &nargc, &nargv,
+	    HXOPT_USAGEONERR | HXOPT_PTHRU) != HXOPT_ERR_SUCCESS)
+		return EXIT_FAILURE;
+	printf("argc = %d\n", nargc);
+	dump_argv(nargv);
 	printf("\n");
+	HX_zvecfree(nargv);
+	return EXIT_SUCCESS;
 }
 
-static void t_empty_argv(void)
+static int t_empty_argv(void)
 {
-	const char *zero_argv[] = {NULL}, **zero_argp = zero_argv;
-	int zero_argc = 0;
+	char *zero_argv[] = {nullptr};
+	char **new_argv = nullptr;
 
 	printf("Testing argv={NULL}\n");
-	HX_getopt(table, &zero_argc, &zero_argp, HXOPT_USAGEONERR);
+	if (HX_getopt5(table, zero_argv, nullptr, &new_argv,
+	    HXOPT_USAGEONERR) != HXOPT_ERR_SUCCESS)
+		return EXIT_FAILURE;
+	HX_zvecfree(new_argv);
+	return EXIT_SUCCESS;
 }
 
-int main(int argc, const char **argv)
+static int t_keep_argv(void)
 {
-	if (HX_init() <= 0)
+	static const char *const one_argv[] = {"what", nullptr};
+	const char **argv = const_cast2(const char **, one_argv);
+	if (HX_getopt(table, nullptr, &argv, HXOPT_KEEP_ARGV) != HXOPT_ERR_SUCCESS)
 		return EXIT_FAILURE;
-	printf("Return value of HX_getopt: %d\n",
-	       HX_getopt(table, &argc, &argv, HXOPT_USAGEONERR));
-	t_empty_argv();
+	return argv == one_argv ? EXIT_SUCCESS : EXIT_FAILURE;
+}
+
+static int runner(int argc, char **argv)
+{
+	char **nargv = nullptr;
+	int ret = HX_getopt5(table, argv, &argc, &nargv, HXOPT_USAGEONERR);
+	printf("Return value of HX_getopt: %d\n", ret);
+	if (ret == EXIT_SUCCESS)
+		HX_zvecfree(nargv);
+	ret = t_empty_argv();
+	if (ret != EXIT_SUCCESS)
+		return ret;
+	ret = t_keep_argv();
+	if (ret != EXIT_SUCCESS)
+		return ret;
 
 	printf("Either-or is: %s\n", opt_eitheror[opt_dst]);
 	printf("values: D=%lf I=%d L=%ld S=%s\n",
@@ -110,9 +135,16 @@ int main(int argc, const char **argv)
 	printf("Verbosity level: %d\n", opt_v);
 	printf("Mask: 0x%08X\n", opt_mask);
 	printf("mcstr: >%s<\n", opt_mcstr);
+	return t_pthru();
+}
 
-	t_pthru();
-
+int main(int argc, char **argv)
+{
+	if (HX_init() <= 0)
+		return EXIT_FAILURE;
+	int ret = runner(argc, argv);
+	if (ret != EXIT_SUCCESS)
+		printf("FAILED\n");
 	HX_exit();
-	return EXIT_SUCCESS;
+	return ret;
 }
diff --git a/src/tc-realpath.c b/src/tc-realpath.c
index 23609ca..b71c127 100644
--- a/src/tc-realpath.c
+++ b/src/tc-realpath.c
@@ -8,6 +8,7 @@
 #include <libHX/io.h>
 #include <libHX/option.h>
 #include <libHX/string.h>
+#include "internal.h"
 
 static unsigned int rp_flags;
 static unsigned int rp_absolute;
@@ -24,9 +25,9 @@ static const struct HXoption rp_option_table[] = {
 	HXOPT_TABLEEND,
 };
 
-static bool rp_get_options(int *argc, const char ***argv)
+static bool rp_get_options(char **oargv, int *argc, char ***argv)
 {
-	if (HX_getopt(rp_option_table, argc, argv, HXOPT_USAGEONERR) !=
+	if (HX_getopt5(rp_option_table, oargv, argc, argv, HXOPT_USAGEONERR) !=
 	    HXOPT_ERR_SUCCESS)
 		return false;
 	rp_flags = HX_REALPATH_DEFAULT;
@@ -47,18 +48,19 @@ static void t_1(void)
 	HXmc_free(tmp);
 }
 
-int main(int argc, const char **argv)
+int main(int argc, char **oargv)
 {
+	char **argv = nullptr;
 	hxmc_t *res;
 	int ret;
 
-	if (!rp_get_options(&argc, &argv))
+	if (!rp_get_options(oargv, &argc, &argv))
 		return EXIT_FAILURE;
 	t_1();
 
 	res = NULL;
-	while (--argc > 0) {
-		ret = HX_realpath(&res, *++argv, rp_flags);
+	for (int i = 1; i < argc; ++i) {
+		ret = HX_realpath(&res, argv[argc], rp_flags);
 		if (ret < 0) {
 			perror("HX_realpath");
 			printf("\n");
@@ -66,5 +68,6 @@ int main(int argc, const char **argv)
 			printf("%s\n", res);
 		}
 	}
+	HX_zvecfree(argv);
 	return EXIT_SUCCESS;
 }
diff --git a/src/tc-shconfig.c b/src/tc-shconfig.c
index 3717c15..0dde4c5 100644
--- a/src/tc-shconfig.c
+++ b/src/tc-shconfig.c
@@ -44,7 +44,7 @@ static int t_shconfig2(const char *file)
 	return EXIT_SUCCESS;
 }
 
-static int runner(int argc, const char **argv)
+static int runner(int argc, char **argv)
 {
 	int ret;
 
@@ -61,7 +61,7 @@ static int runner(int argc, const char **argv)
 	return EXIT_SUCCESS;
 }
 
-int main(int argc, const char **argv)
+int main(int argc, char **argv)
 {
 	int ret = runner(argc, argv);
 	if (ret != EXIT_SUCCESS)
diff --git a/src/tc-string.c b/src/tc-string.c
index 1c7ed09..e7f90c2 100644
--- a/src/tc-string.c
+++ b/src/tc-string.c
@@ -197,93 +197,6 @@ static void t_split2(void)
 	HX_zvecfree(a);
 }
 
-/* avoid these being inlined */
-extern char *f_strlcpy_str(char *, const char *, size_t);
-extern char *f_strlcpy_mem(char *, const char *, size_t);
-
-EXPORT_SYMBOL char *f_strlcpy_str(char *d, const char *s, size_t n)
-{
-	if (n == 0)
-		return d;
-	strncpy(d, s, n);
-	d[n-1] = '\0';
-	return d;
-}
-
-EXPORT_SYMBOL char *f_strlcpy_mem(char *dest, const char *src, size_t dsize)
-{
-	size_t slen = strlen(src);
-	if (slen < dsize)
-		return static_cast(char *, memcpy(dest, src, slen + 1));
-	if (dsize > 0) {
-		memcpy(dest, src, dsize - 1);
-		dest[dsize-1] = '\0';
-	}
-	return dest;
-}
-
-static const char s_lorem_ipsum[] = /* 1368 chars */
-"Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo "
-"ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis "
-"parturient montes, nascetur ridiculus mus. Donec quam felis, ultricies nec, "
-"pellentesque eu, pretium quis, sem. Nulla consequat massa quis enim. Donec "
-"pede justo, fringilla vel, aliquet nec, vulputate eget, arcu. In enim justo, "
-"rhoncus ut, imperdiet a, venenatis vitae, justo. Nullam dictum felis eu pede "
-"mollis pretium. Integer tincidunt. Cras dapibus. Vivamus elementum semper "
-"nisi. Aenean vulputate eleifend tellus. Aenean leo ligula, porttitor eu, "
-"consequat vitae, eleifend ac, enim. Aliquam lorem ante, dapibus in, viverra "
-"quis, feugiat a, tellus. Phasellus viverra nulla ut metus varius laoreet. "
-"Quisque rutrum. Aenean imperdiet. Etiam ultricies nisi vel augue. Curabitur "
-"ullamcorper ultricies nisi. Nam eget dui. Etiam rhoncus. Maecenas tempus, "
-"tellus eget condimentum rhoncus, sem quam semper libero, sit amet adipiscing "
-"sem neque sed ipsum. Nam quam nunc, blandit vel, luctus pulvinar, hendrerit "
-"id, lorem. Maecenas nec odio et ante tincidunt tempus. Donec vitae sapien ut "
-"libero venenatis faucibus. Nullam quis ante. Etiam sit amet orci eget eros "
-"faucibus tincidunt. Duis leo. Sed fringilla mauris sit amet nibh. Donec "
-"sodales sagittis magna. Sed consequat, leo eget bibendum sodales, augue velit "
-"cursus nunc,";
-
-static void t_strlcpy(void)
-{
-	static const size_t picksizes[] =
-		{4, 8, 16, 32, 64, 80, 128, 256, 1024, 2048};
-	char ibuf[2048], obuf[2048];
-	size_t ipick, opick, k, runs = 10000000 + HX_irand(0, 1);
-	struct timespec start, stop, d1, d2, d3;
-
-	for (ipick = 0; ipick < ARRAY_SIZE(picksizes); ++ipick) {
-		/* Select string size */
-		HX_strlcpy(ibuf, s_lorem_ipsum, picksizes[ipick]);
-
-		for (opick = 0; opick < ARRAY_SIZE(picksizes); ++opick) {
-			/* Select buffer size */
-			clock_gettime(CLOCK_MONOTONIC, &start);
-			for (k = 0; k < runs; ++k)
-				f_strlcpy_str(reinterpret_cast(char *, obuf),
-					ibuf, picksizes[opick]);
-			clock_gettime(CLOCK_MONOTONIC, &stop);
-			HX_timespec_sub(&d1, &stop, &start);
-
-			clock_gettime(CLOCK_MONOTONIC, &start);
-			for (k = 0; k < runs; ++k)
-				f_strlcpy_mem(reinterpret_cast(char *, obuf),
-					ibuf, picksizes[opick]);
-			clock_gettime(CLOCK_MONOTONIC, &stop);
-			HX_timespec_sub(&d2, &stop, &start);
-
-			HX_timespec_sub(&d3, &d1, &d2);
-			printf("%4zu->%4zu: " HX_TIMESPEC_FMT
-			       " (str=" HX_TIMESPEC_FMT
-			       " mem=" HX_TIMESPEC_FMT ")\n",
-				strlen(ibuf), picksizes[opick],
-				HX_TIMESPEC_EXP(&d3),
-				HX_TIMESPEC_EXP(&d1),
-				HX_TIMESPEC_EXP(&d2)
-				);
-		}
-	}
-}
-
 static void t_strlcpy2(void)
 {
 	char a[3] = {49, 49, 49};
@@ -381,8 +294,8 @@ static int t_units_strto(void)
 		unsigned long long expect_out;
 		const char expect_rem[8];
 	} vt[] = {
-		{"-5k", 1000, ULLONG_MAX, "-5k"},
-		{" -5.2k", 1000, ULLONG_MAX, "-5.2k"},
+		{"-5k", 1000, -5000ULL, ""},
+		{" -5.2k", 1000, -5200ULL, ""},
 		{"1", 9999, 1, ""},
 		{"1024", 9999, 1ULL << 10, ""},
 		{"1048576", 9999, 1ULL << 20, ""},
@@ -403,6 +316,10 @@ static int t_units_strto(void)
 		{"1T", 1024, 1ULL << 40, ""},
 		{"1P", 1024, 1ULL << 50, ""},
 		{"1E", 1024, 1ULL << 60, ""},
+		{"15E", 1024, 15ULL << 60, ""},
+		{"16E", 1024, ULLONG_MAX, ""},
+		{"16.0E", 1024, ULLONG_MAX, ""},
+		{"1Z", 1024, ULLONG_MAX, ""},
 		{"0", 0, 0, ""},
 		{"0k", 0, 0, ""},
 		{"0  Z", 0, 0, ""},
@@ -412,18 +329,28 @@ static int t_units_strto(void)
 		{"0.00000000000000001E", 1024, 11, ""},
 		{"1.525444GiB", 1000, 1525444000, "iB"},
 		{"1.525444GiB", 1024, 1637933022, "iB"},
+		{"2M4k", 1000, 2000000, "4k"},
+		{"18446744073709551614", 0, 18446744073709551614ULL, ""},
+		{"18446744073709551615", 0, ULLONG_MAX, ""},
+		{"18446744073709551616", 0, ULLONG_MAX, ""},
+		{"-18446744073709551614", 0, 2, ""},
+		{"-18446744073709551615", 0, 1, ""},
+		{"-18446744073709551616", 0, ULLONG_MAX, ""},
 	};
 	char *end;
 	for (size_t i = 0; i < ARRAY_SIZE(vt); ++i) {
 		unsigned long long q = HX_strtoull_unit(vt[i].input, &end, vt[i].exponent);
-		printf("%s -> %llu __ %s\n", vt[i].input, q, end);
-		if (q != vt[i].expect_out || strcmp(end, vt[i].expect_rem) != 0)
+		printf("Observed: %s -> %llu __ %s\n", vt[i].input, q, end);
+		if (q != vt[i].expect_out || strcmp(end, vt[i].expect_rem) != 0) {
+			printf("Expected: %s -> %llu __ %s\n", vt[i].input,
+				vt[i].expect_out, vt[i].expect_rem);
 			return EXIT_FAILURE;
+		}
 	}
 	return EXIT_SUCCESS;
 }
 
-static void t_time_units(void)
+static int t_time_units(void)
 {
 	static const struct {
 		unsigned long long input;
@@ -432,10 +359,13 @@ static void t_time_units(void)
 	} vt[] = {
 		{31536000, 0, "365d"},
 		{31622400, 0, "366d"},
-		{31622400, HXUNIT_YEARS, "1y18h"},
-		{31622400, HXUNIT_MONTHS, "1y"},
-		{31622400, HXUNIT_WEEKS, "1y"},
-		{31622400, HXUNIT_MONTHS | HXUNIT_WEEKS, "1y"},
+		{34819200, HXUNIT_WEEKS, "57weeks4d"},
+		{34819200, HXUNIT_MONTHS, "13months7d7h30min"},
+		{34819200, HXUNIT_MONTHS | HXUNIT_WEEKS, "13months1week7h30min"},
+		{34819200, HXUNIT_YEARS, "1y37d18h"},
+		{34819200, HXUNIT_YEARS | HXUNIT_WEEKS, "1y5weeks2d18h"},
+		{34819200, HXUNIT_YEARS | HXUNIT_MONTHS, "1y1month7d7h30min"},
+		{34819200, HXUNIT_YEARS | HXUNIT_MONTHS | HXUNIT_WEEKS, "1y1month1week7h30min"},
 		{2678400, HXUNIT_MONTHS, "1month13h30min"},
 		{2592000, HXUNIT_MONTHS, "30d"},
 		{608400, HXUNIT_WEEKS, "1week1h"},
@@ -449,41 +379,55 @@ static void t_time_units(void)
 	for (size_t i = 0; i < ARRAY_SIZE(vt); ++i) {
 		char out[60];
 		char *ret = HX_unit_seconds(out, ARRAY_SIZE(out), vt[i].input, vt[i].flags);
-		printf("%llus => \"%s\"\n", vt[i].input, ret);
-		if (strcmp(ret, vt[i].expect_out) != 0)
-			printf("\tBUG, expected \"%s\"\n", vt[i].expect_out);
+		printf("Observed: %llus => \"%s\"\n", vt[i].input, ret);
+		if (strcmp(ret, vt[i].expect_out) != 0) {
+			printf("Expected: \"%s\"\n", vt[i].expect_out);
+			return EXIT_FAILURE;
+		}
 	}
+	return EXIT_SUCCESS;
 }
 
-static void t_time_strto(void)
+static int t_time_strto(void)
 {
 	#define NS_PER_S 1000000000ULL
 	static const struct {
 		const char *input;
 		unsigned long long expect_s, expect_ns;
-		const char expect_rem[8];
+		const char expect_rem[16];
 	} vt[] = {
 		{"29µs", 0, 29000, ""},
 		{"1y", 31557600, NS_PER_S * 31557600, ""},
 		{"1y1month1week1d1h1min1s ", 31557600+2629800+86400*8+3600+60+1, NS_PER_S * (31557600+2629800+86400*8+3600+60+1), ""},
 		{" -1d", 0, 0, "-1d"},
-		{"1 -", 1, NS_PER_S, "-"},
+		{"1 -", 0, 0, "1 -"},
 		{"12.5 hours .5 hours 240 minutes 25200 seconds", 86400, NS_PER_S * 86400, ""},
 		{"1s", 1, NS_PER_S, ""},
 		{"1min", 60, 60 * NS_PER_S, ""},
 		{"0", 0, 0, ""},
+		{"0.0", 0, 0, ""},
+		{"1s0", 1, NS_PER_S, ""},
+		{"1s0.0", 1, NS_PER_S, ""},
+		{"1s1s", 2, 2 * NS_PER_S, ""},
+		{"1s1", 1, 1 * NS_PER_S, "1"},
+		{"584542046091y", ULLONG_MAX, ULLONG_MAX, "584542046091y"},
 	};
 	char *end;
 	printf("===== t_time_strto\n");
 	for (size_t i = 0; i < ARRAY_SIZE(vt); ++i) {
 		unsigned long long q = HX_strtoull_sec(vt[i].input, &end);
 		unsigned long long qn = HX_strtoull_nsec(vt[i].input, &end);
-		printf("\"%s\" => %llus [%lluns] + \"%s\"\n", vt[i].input, q, qn, end);
-		if (q != vt[i].expect_s || qn != vt[i].expect_ns)
-			printf("\tBUG: expected %llus [%lluns]\n", vt[i].expect_s, vt[i].expect_ns);
-		if (strcmp(end, vt[i].expect_rem) != 0)
-			printf("\tBUG: expected remainder \"%s\"\n", vt[i].expect_rem);
+		printf("Observed: \"%s\" => %llus [%lluns] + \"%s\"\n", vt[i].input, q, qn, end);
+		if (q != vt[i].expect_s || qn != vt[i].expect_ns) {
+			printf("Expected: %llus [%lluns]\n", vt[i].expect_s, vt[i].expect_ns);
+			return EXIT_FAILURE;
+		}
+		if (strcmp(end, vt[i].expect_rem) != 0) {
+			printf("Expected: remainder \"%s\"\n", vt[i].expect_rem);
+			return EXIT_FAILURE;
+		}
 	}
+	return EXIT_SUCCESS;
 }
 
 static int t_strmid(void)
@@ -515,7 +459,7 @@ static int t_strmid(void)
 #undef T
 }
 
-static int runner(int argc, const char **argv)
+static int runner(int argc, char **argv)
 {
 	hxmc_t *tx = NULL;
 	const char *file = (argc >= 2) ? argv[1] : "tx-string.cpp";
@@ -559,19 +503,22 @@ static int runner(int argc, const char **argv)
 	ret = t_units_strto();
 	if (ret != EXIT_SUCCESS)
 		return EXIT_FAILURE;
-	t_time_units();
-	t_time_strto();
-	t_strlcpy();
+	ret = t_time_units();
+	if (ret != EXIT_SUCCESS)
+		return EXIT_FAILURE;
+	ret = t_time_strto();
+	if (ret != EXIT_SUCCESS)
+		return EXIT_FAILURE;
 	t_strlcpy2();
 	HXmc_free(tx);
 	HX_exit();
 	return EXIT_SUCCESS;
 }
 
-int main(int argc, const char **argv)
+int main(int argc, char **argv)
 {
 	int ret = runner(argc, argv);
-	if (ret != EXIT_FAILURE)
+	if (ret == EXIT_FAILURE)
 		fprintf(stderr, "FAILED\n");
 	return ret;
 }
diff --git a/src/tc-switchuser.c b/src/tc-switchuser.c
index 4cc5604..e5d2c25 100644
--- a/src/tc-switchuser.c
+++ b/src/tc-switchuser.c
@@ -19,9 +19,10 @@ static const struct HXoption options_table[] = {
 	HXOPT_TABLEEND,
 };
 
-static int runner(int argc, const char **argv)
+static int runner(int argc, char **argv)
 {
-	HX_getopt(options_table, &argc, &argv, HXOPT_USAGEONERR);
+	if (HX_getopt(options_table, &argc, &argv, HXOPT_USAGEONERR) != HXOPT_ERR_SUCCESS)
+		return EXIT_FAILURE;
 	const char *user = user_name != NULL ? user_name : "-";
 	const char *group = group_name != NULL ? group_name : "-";
 	switch (HXproc_switch_user(user_name, group_name)) {
@@ -62,10 +63,11 @@ static int runner(int argc, const char **argv)
 		break;
 	}
 	}
+	HX_zvecfree(argv);
 	return EXIT_SUCCESS;
 }
 
-int main(int argc, const char **argv)
+int main(int argc, char **argv)
 {
 	int ret = runner(argc, argv);
 	if (ret != EXIT_SUCCESS)
diff --git a/src/tx-option.cpp b/src/tx-option.cpp
index b70110f..248ab7c 100644
--- a/src/tx-option.cpp
+++ b/src/tx-option.cpp
@@ -12,8 +12,10 @@ static const struct HXoption t[] = {
 	HXOPT_TABLEEND,
 };
 
-int main(int argc, const char **argv)
+int main(int argc, char **argv)
 {
-	HX_getopt(t, &argc, &argv, HXOPT_USAGEONERR);
+	if (HX_getopt(t, &argc, &argv, HXOPT_USAGEONERR) != HXOPT_ERR_SUCCESS)
+		return EXIT_FAILURE;
+	HX_zvecfree(argv);
 	return EXIT_SUCCESS;
 }
diff --git a/src/uxcompat.h b/src/uxcompat.h
new file mode 100644
index 0000000..e735c50
--- /dev/null
+++ b/src/uxcompat.h
@@ -0,0 +1,104 @@
+#ifndef _LIBHX_UXCOMPAT_H
+#define _LIBHX_UXCOMPAT_H 1
+
+#if defined(__cplusplus) && __cplusplus >= 201100UL
+#	include <cstddef>
+#	include <cstdint>
+#else
+#	include <stddef.h>
+#	include <stdint.h>
+#endif
+#include <sys/stat.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef ENOSYS
+#	define ENOSYS 38 /* Function not implemented */
+#endif
+
+#ifndef S_IFLNK
+#	define S_IFLNK  0xA000
+#endif
+#ifndef S_IFSOCK
+#	define S_IFSOCK 0xC000
+#endif
+#ifndef S_IFBLK
+#	define S_IFBLK 0x6000
+#endif
+#ifndef S_IFCHR
+#	define S_IFCHR 0x2000
+#endif
+#ifndef S_IFIFO
+#	define S_IFIFO 0x1000
+#endif
+#ifndef S_ISBLK
+#	define S_ISBLK(__mode) (((__mode) & S_IFMT) == S_IFBLK)
+#endif
+#ifndef S_ISCHR
+#	define S_ISCHR(__mode) (((__mode) & S_IFMT) == S_IFCHR)
+#endif
+#ifndef S_ISDIR
+#	define S_ISDIR(__mode) (((__mode) & S_IFMT) == S_IFDIR)
+#endif
+#ifndef S_ISREG
+#	define S_ISREG(__mode) (((__mode) & S_IFMT) == S_IFREG)
+#endif
+#ifndef S_ISLNK
+#	define S_ISLNK(__mode) (((__mode) & S_IFMT) == S_IFLNK)
+#endif
+#ifndef S_ISFIFO
+#	define S_ISFIFO(__mode) (((__mode) & S_IFMT) == S_IFIFO)
+#endif
+#ifndef S_ISSOCK
+#	define S_ISSOCK(__mode) (((__mode) & S_IFMT) == S_IFSOCK)
+#endif
+#ifndef S_IRGRP
+#	define S_IRGRP 00040
+#endif
+#ifndef S_IWGRP
+#	define S_IWGRP 00020
+#endif
+#ifndef S_IROTH
+#	define S_IROTH 00004
+#endif
+#ifndef S_IWOTH
+#	define S_IWOTH 00002
+#endif
+
+struct stat;
+
+/*
+ *	UX-FILE.C
+ */
+extern int chown(const char *, long, long);
+extern int fchmod(int, long);
+extern int fchown(int, long, long);
+extern int lchown(const char *, long, long);
+extern int lstat(const char *, struct stat *);
+extern int mkfifo(const char *, long);
+extern int mknod(const char *, long, long);
+extern int readlink(const char *, char *, size_t);
+extern int symlink(const char *, const char *);
+
+/*
+ *	UX-MMAP.C
+ */
+#ifdef _WIN32
+#	define MAP_FAILED  reinterpret_cast(void *, static_cast(intptr_t, -1))
+#	define PROT_NONE   0x0
+#	define PROT_READ   0x1
+#	define PROT_WRITE  0x2
+#	define PROT_EXEC   0x4
+#	define MAP_SHARED  0x1
+#	define MAP_PRIVATE 0x2
+extern void *mmap(void *, size_t, int, int, int, off_t);
+extern int munmap(void *, size_t);
+#endif
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* _LIBHX_UXCOMPAT_H */