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Diffstat (limited to 'lib/vasnprintf.c')
-rw-r--r--lib/vasnprintf.c250
1 files changed, 59 insertions, 191 deletions
diff --git a/lib/vasnprintf.c b/lib/vasnprintf.c
index 48574524..01d18bf5 100644
--- a/lib/vasnprintf.c
+++ b/lib/vasnprintf.c
@@ -101,7 +101,6 @@
#include "xsize.h"
#include "attribute.h"
-#include "verify.h"
#if (NEED_PRINTF_DOUBLE || NEED_PRINTF_LONG_DOUBLE) && !defined IN_LIBINTL
# include <math.h>
@@ -408,11 +407,11 @@ is_infinite_or_zerol (long double x)
typedef unsigned int mp_limb_t;
# define GMP_LIMB_BITS 32
-verify (sizeof (mp_limb_t) * CHAR_BIT == GMP_LIMB_BITS);
+static_assert (sizeof (mp_limb_t) * CHAR_BIT == GMP_LIMB_BITS);
typedef unsigned long long mp_twolimb_t;
# define GMP_TWOLIMB_BITS 64
-verify (sizeof (mp_twolimb_t) * CHAR_BIT == GMP_TWOLIMB_BITS);
+static_assert (sizeof (mp_twolimb_t) * CHAR_BIT == GMP_TWOLIMB_BITS);
/* Representation of a bignum >= 0. */
typedef struct
@@ -915,8 +914,7 @@ divide (mpn_t a, mpn_t b, mpn_t *q)
q_ptr[q_len++] = 1;
}
keep_q:
- if (tmp_roomptr != NULL)
- free (tmp_roomptr);
+ free (tmp_roomptr);
q->limbs = q_ptr;
q->nlimbs = q_len;
return roomptr;
@@ -1873,11 +1871,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
free (a.arg);
if (PRINTF_FETCHARGS (args, &a) < 0)
- {
- CLEANUP ();
- errno = EINVAL;
- return NULL;
- }
+ goto fail_1_with_EINVAL;
{
size_t buf_neededlength;
@@ -1913,19 +1907,12 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
buf_malloced = buf;
}
- if (resultbuf != NULL)
- {
- result = resultbuf;
- allocated = *lengthp;
- }
- else
- {
- result = NULL;
- allocated = 0;
- }
+ result = resultbuf;
+ allocated = (resultbuf != NULL ? *lengthp : 0);
length = 0;
/* Invariants:
- result is either == resultbuf or == NULL or malloc-allocated.
+ result is either == resultbuf or malloc-allocated.
+ If result == NULL, resultbuf is == NULL as well.
If length > 0, then result != NULL. */
/* Ensures that allocated >= needed. Aborts through a jump to
@@ -1942,7 +1929,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
memory_size = xtimes (allocated, sizeof (DCHAR_T)); \
if (size_overflow_p (memory_size)) \
oom_statement \
- if (result == resultbuf || result == NULL) \
+ if (result == resultbuf) \
memory = (DCHAR_T *) malloc (memory_size); \
else \
memory = (DCHAR_T *) realloc (result, memory_size); \
@@ -2112,15 +2099,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
if (count == 0)
break;
if (count < 0)
- {
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- errno = EILSEQ;
- return NULL;
- }
+ goto fail_with_EILSEQ;
arg_end += count;
characters++;
}
@@ -2137,15 +2116,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
if (count == 0)
break;
if (count < 0)
- {
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- errno = EILSEQ;
- return NULL;
- }
+ goto fail_with_EILSEQ;
arg_end += count;
characters++;
}
@@ -2191,14 +2162,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
converted, &converted_len);
# endif
if (converted == NULL)
- {
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- return NULL;
- }
+ goto fail_with_errno;
if (converted != result + length)
{
ENSURE_ALLOCATION_ELSE (xsum (length, converted_len),
@@ -2237,15 +2201,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
if (count == 0)
break;
if (count < 0)
- {
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- errno = EILSEQ;
- return NULL;
- }
+ goto fail_with_EILSEQ;
arg_end += count;
characters++;
}
@@ -2262,15 +2218,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
if (count == 0)
break;
if (count < 0)
- {
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- errno = EILSEQ;
- return NULL;
- }
+ goto fail_with_EILSEQ;
arg_end += count;
characters++;
}
@@ -2316,14 +2264,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
converted, &converted_len);
# endif
if (converted == NULL)
- {
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- return NULL;
- }
+ goto fail_with_errno;
if (converted != result + length)
{
ENSURE_ALLOCATION_ELSE (xsum (length, converted_len),
@@ -2362,15 +2303,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
if (count == 0)
break;
if (count < 0)
- {
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- errno = EILSEQ;
- return NULL;
- }
+ goto fail_with_EILSEQ;
arg_end += count;
characters++;
}
@@ -2387,15 +2320,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
if (count == 0)
break;
if (count < 0)
- {
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- errno = EILSEQ;
- return NULL;
- }
+ goto fail_with_EILSEQ;
arg_end += count;
characters++;
}
@@ -2441,14 +2366,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
converted, &converted_len);
# endif
if (converted == NULL)
- {
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- return NULL;
- }
+ goto fail_with_errno;
if (converted != result + length)
{
ENSURE_ALLOCATION_ELSE (xsum (length, converted_len),
@@ -2590,16 +2508,8 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
/* Found the terminating NUL. */
break;
if (count < 0)
- {
- /* Invalid or incomplete multibyte character. */
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- errno = EILSEQ;
- return NULL;
- }
+ /* Invalid or incomplete multibyte character. */
+ goto fail_with_EILSEQ;
arg_end += count;
characters++;
}
@@ -2626,16 +2536,8 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
/* Found the terminating NUL. */
break;
if (count < 0)
- {
- /* Invalid or incomplete multibyte character. */
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- errno = EILSEQ;
- return NULL;
- }
+ /* Invalid or incomplete multibyte character. */
+ goto fail_with_EILSEQ;
arg_end += count;
characters++;
}
@@ -2725,7 +2627,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
size_t characters;
# if !DCHAR_IS_TCHAR
/* This code assumes that TCHAR_T is 'char'. */
- verify (sizeof (TCHAR_T) == 1);
+ static_assert (sizeof (TCHAR_T) == 1);
TCHAR_T *tmpsrc;
DCHAR_T *tmpdst;
size_t tmpdst_len;
@@ -2752,16 +2654,8 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
break;
count = local_wcrtomb (cbuf, *arg_end, &state);
if (count < 0)
- {
- /* Cannot convert. */
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- errno = EILSEQ;
- return NULL;
- }
+ /* Cannot convert. */
+ goto fail_with_EILSEQ;
if (precision < (unsigned int) count)
break;
arg_end++;
@@ -2793,16 +2687,8 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
break;
count = local_wcrtomb (cbuf, *arg_end, &state);
if (count < 0)
- {
- /* Cannot convert. */
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- errno = EILSEQ;
- return NULL;
- }
+ /* Cannot convert. */
+ goto fail_with_EILSEQ;
arg_end++;
characters += count;
}
@@ -2859,12 +2745,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
if (tmpdst == NULL)
{
free (tmpsrc);
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- return NULL;
+ goto fail_with_errno;
}
free (tmpsrc);
# endif
@@ -2938,16 +2819,8 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
abort ();
count = local_wcrtomb (cbuf, *arg, &state);
if (count <= 0)
- {
- /* Cannot convert. */
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- errno = EILSEQ;
- return NULL;
- }
+ /* Cannot convert. */
+ goto fail_with_EILSEQ;
ENSURE_ALLOCATION (xsum (length, count));
memcpy (result + length, cbuf, count);
length += count;
@@ -3020,7 +2893,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
size_t characters;
# if !DCHAR_IS_TCHAR
/* This code assumes that TCHAR_T is 'char'. */
- verify (sizeof (TCHAR_T) == 1);
+ static_assert (sizeof (TCHAR_T) == 1);
TCHAR_T tmpsrc[64]; /* Assume MB_CUR_MAX <= 64. */
DCHAR_T *tmpdst;
size_t tmpdst_len;
@@ -3083,14 +2956,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
NULL,
NULL, &tmpdst_len);
if (tmpdst == NULL)
- {
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- return NULL;
- }
+ goto fail_with_errno;
# endif
if (has_width)
@@ -5463,13 +5329,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
errno = EINVAL;
}
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
-
- return NULL;
+ goto fail_with_errno;
}
#if USE_SNPRINTF
@@ -5590,7 +5450,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
DCHAR_T *tmpdst;
size_t tmpdst_len;
/* This code assumes that TCHAR_T is 'char'. */
- verify (sizeof (TCHAR_T) == 1);
+ static_assert (sizeof (TCHAR_T) == 1);
# if USE_SNPRINTF
tmpsrc = (TCHAR_T *) (result + length);
# else
@@ -5603,14 +5463,7 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
NULL,
NULL, &tmpdst_len);
if (tmpdst == NULL)
- {
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
- return NULL;
- }
+ goto fail_with_errno;
ENSURE_ALLOCATION_ELSE (xsum (length, tmpdst_len),
{ free (tmpdst); goto out_of_memory; });
DCHAR_CPY (result + length, tmpdst, tmpdst_len);
@@ -5835,25 +5688,40 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
#if USE_SNPRINTF
overflow:
- if (!(result == resultbuf || result == NULL))
- free (result);
- if (buf_malloced != NULL)
- free (buf_malloced);
- CLEANUP ();
errno = EOVERFLOW;
- return NULL;
+ goto fail_with_errno;
#endif
out_of_memory:
- if (!(result == resultbuf || result == NULL))
+ errno = ENOMEM;
+ goto fail_with_errno;
+
+#if ENABLE_UNISTDIO || ((!USE_SNPRINTF || !HAVE_SNPRINTF_RETVAL_C99 || USE_MSVC__SNPRINTF || (NEED_PRINTF_DIRECTIVE_LS && !defined IN_LIBINTL) || ENABLE_WCHAR_FALLBACK) && HAVE_WCHAR_T)
+ fail_with_EILSEQ:
+ errno = EILSEQ;
+ goto fail_with_errno;
+#endif
+
+ fail_with_errno:
+ if (result != resultbuf)
free (result);
if (buf_malloced != NULL)
free (buf_malloced);
- out_of_memory_1:
CLEANUP ();
- errno = ENOMEM;
return NULL;
}
+
+ out_of_memory_1:
+ errno = ENOMEM;
+ goto fail_1_with_errno;
+
+ fail_1_with_EINVAL:
+ errno = EINVAL;
+ goto fail_1_with_errno;
+
+ fail_1_with_errno:
+ CLEANUP ();
+ return NULL;
}
#undef MAX_ROOM_NEEDED
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 02:35:50 +0000