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-rw-r--r--lib/string.in.h21
1 files changed, 19 insertions, 2 deletions
diff --git a/lib/string.in.h b/lib/string.in.h
index 064b0f9a..f3d66793 100644
--- a/lib/string.in.h
+++ b/lib/string.in.h
@@ -1,6 +1,6 @@
/* A GNU-like <string.h>.
- Copyright (C) 1995-1996, 2001-2016 Free Software Foundation, Inc.
+ Copyright (C) 1995-1996, 2001-2017 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or
modify it under the terms of either:
@@ -22,7 +22,7 @@
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, see <http://www.gnu.org/licenses/>. */
+ along with this program; if not, see <https://www.gnu.org/licenses/>. */
#if __GNUC__ >= 3
@PRAGMA_SYSTEM_HEADER@
@@ -83,6 +83,23 @@
/* The definition of _GL_WARN_ON_USE is copied here. */
+/* Clear a block of memory. The compiler will not delete a call to
+ this function, even if the block is dead after the call. */
+#if @GNULIB_EXPLICIT_BZERO@
+# if ! @HAVE_EXPLICIT_BZERO@
+_GL_FUNCDECL_SYS (explicit_bzero, void,
+ (void *__dest, size_t __n) _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (explicit_bzero, void, (void *__dest, size_t __n));
+_GL_CXXALIASWARN (explicit_bzero);
+#elif defined GNULIB_POSIXCHECK
+# undef explicit_bzero
+# if HAVE_RAW_DECL_EXPLICIT_BZERO
+_GL_WARN_ON_USE (explicit_bzero, "explicit_bzero is unportable - "
+ "use gnulib module explicit_bzero for portability");
+# endif
+#endif
+
/* Find the index of the least-significant set bit. */
#if @GNULIB_FFSL@
# if !@HAVE_FFSL@