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* stdio-common/vfprintf.c (vfprintf): Compute necessary buffer size

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with size_t type.
	* stdio-common/printf_fp.c (__print_fp): Change chars_needed type to
	size_t.  Add casts where needed.
This commit is contained in:
Ulrich Drepper 2007-11-06 21:38:49 +00:00
parent eb46bc8fd6
commit 9ca230d62f
3 changed files with 26 additions and 14 deletions
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5
ChangeLog
View File

@ -1,5 +1,10 @@
2007-11-06 Ulrich Drepper <drepper@redhat.com>
* stdio-common/vfprintf.c (vfprintf): Compute necessary buffer size
with size_t type.
* stdio-common/printf_fp.c (__print_fp): Change chars_needed type to
size_t. Add casts where needed.
* nscd/selinux.c (nscd_request_avc_has_perm): When compiled with
old headers, don't call avc_has_perm if we don't have the
permission information.

17
stdio-common/printf_fp.c
View File

@ -808,7 +808,7 @@ ___printf_fp (FILE *fp,
{
int width = info->width;
wchar_t *wstartp, *wcp;
int chars_needed;
size_t chars_needed;
int expscale;
int intdig_max, intdig_no = 0;
int fracdig_min;
@ -823,7 +823,7 @@ ___printf_fp (FILE *fp,
type = info->spec;
intdig_max = 1;
fracdig_min = fracdig_max = info->prec < 0 ? 6 : info->prec;
chars_needed = 1 + 1 + fracdig_max + 1 + 1 + 4;
chars_needed = 1 + 1 + (size_t) fracdig_max + 1 + 1 + 4;
/* d . ddd e +- ddd */
dig_max = INT_MAX; /* Unlimited. */
significant = 1; /* Does not matter here. */
@ -838,12 +838,12 @@ ___printf_fp (FILE *fp,
{
intdig_max = exponent + 1;
/* This can be really big! */ /* XXX Maybe malloc if too big? */
chars_needed = exponent + 1 + 1 + fracdig_max;
chars_needed = (size_t) exponent + 1 + 1 + (size_t) fracdig_max;
}
else
{
intdig_max = 1;
chars_needed = 1 + 1 + fracdig_max;
chars_needed = 1 + 1 + (size_t) fracdig_max;
}
}
else
@ -858,7 +858,7 @@ ___printf_fp (FILE *fp,
type = isupper (info->spec) ? 'E' : 'e';
fracdig_max = dig_max - 1;
intdig_max = 1;
chars_needed = 1 + 1 + fracdig_max + 1 + 1 + 4;
chars_needed = 1 + 1 + (size_t) fracdig_max + 1 + 1 + 4;
}
else
{
@ -870,7 +870,7 @@ ___printf_fp (FILE *fp,
zeros can be as many as would be required for
exponential notation with a negative two-digit
exponent, which is 4. */
chars_needed = dig_max + 1 + 4;
chars_needed = (size_t) dig_max + 1 + 4;
}
fracdig_min = info->alt ? fracdig_max : 0;
significant = 0; /* We count significant digits. */
@ -888,16 +888,17 @@ ___printf_fp (FILE *fp,
it is possible that we need two more characters in front of all the
other output. If the amount of memory we have to allocate is too
large use `malloc' instead of `alloca'. */
size_t wbuffer_to_alloc = (2 + (size_t) chars_needed) * sizeof (wchar_t);
buffer_malloced = ! __libc_use_alloca (chars_needed * 2 * sizeof (wchar_t));
if (__builtin_expect (buffer_malloced, 0))
{
wbuffer = (wchar_t *) malloc ((2 + chars_needed) * sizeof (wchar_t));
wbuffer = (wchar_t *) malloc (wbuffer_to_alloc);
if (wbuffer == NULL)
/* Signal an error to the caller. */
return -1;
}
else
wbuffer = (wchar_t *) alloca ((2 + chars_needed) * sizeof (wchar_t));
wbuffer = (wchar_t *) alloca (wbuffer_to_alloc);
wcp = wstartp = wbuffer + 2; /* Let room for rounding. */
/* Do the real work: put digits in allocated buffer. */

18
stdio-common/vfprintf.c
View File

@ -747,7 +747,7 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap)
{ \
int temp = width; \
width = prec; \
PAD (L_('0'));; \
PAD (L_('0')); \
width = temp; \
} \
\
@ -1499,18 +1499,24 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap)
if (prec > width
&& prec + 32 > (int)(sizeof (work_buffer) / sizeof (work_buffer[0])))
{
if (__libc_use_alloca ((prec + 32) * sizeof (CHAR_T)))
workend = ((CHAR_T *) alloca ((prec + 32) * sizeof (CHAR_T)))
+ (prec + 32);
if (__builtin_expect (prec > ~((size_t) 0) - 31, 0))
{
done = -1;
goto all_done;
}
size_t needed = ((size_t) prec + 32) * sizeof (CHAR_T);
if (__libc_use_alloca (needed))
workend = (((CHAR_T *) alloca (needed)) + ((size_t) prec + 32));
else
{
workstart = (CHAR_T *) malloc ((prec + 32) * sizeof (CHAR_T));
workstart = (CHAR_T *) malloc (needed);
if (workstart == NULL)
{
done = -1;
goto all_done;
}
workend = workstart + (prec + 32);
workend = workstart + ((size_t) prec + 32);
}
}
JUMP (*f, step2_jumps);