/* Checked size_t computations. */
#include "xsize.h"
-/* For those losing systems which don't have 'alloca' we have to add
- some additional code emulating it. */
-#ifdef HAVE_ALLOCA
-# define freea(p) /* nothing */
-#else
-# define alloca(n) malloc (n)
-# define freea(p) free (p)
-#endif
-
#ifdef HAVE_WCHAR_T
# ifdef HAVE_WCSLEN
# define local_wcslen wcslen
}
{
- size_t buf_neededlength =
- xsum4 (7, d.max_width_length, d.max_precision_length, 6);
- CHAR_T *buf =
- (CHAR_T *) alloca (xtimes (buf_neededlength, sizeof (CHAR_T)));
+ size_t buf_neededlength;
+ CHAR_T *buf;
+ CHAR_T *buf_malloced;
const CHAR_T *cp;
size_t i;
DIRECTIVE *dp;
size_t allocated;
size_t length;
+ /* Allocate a small buffer that will hold a directive passed to
+ sprintf or snprintf. */
+ buf_neededlength =
+ xsum4 (7, d.max_width_length, d.max_precision_length, 6);
+#if HAVE_ALLOCA
+ if (buf_neededlength < 4000 / sizeof (CHAR_T))
+ {
+ buf = (CHAR_T *) alloca (buf_neededlength * sizeof (CHAR_T));
+ buf_malloced = NULL;
+ }
+ else
+#endif
+ {
+ size_t buf_memsize = xtimes (buf_neededlength, sizeof (CHAR_T));
+ if (size_overflow_p (buf_memsize))
+ goto out_of_memory_1;
+ buf = (CHAR_T *) malloc (buf_memsize);
+ if (buf == NULL)
+ goto out_of_memory_1;
+ buf_malloced = buf;
+ }
+
if (resultbuf != NULL)
{
result = resultbuf;
{
size_t augmented_length;
- if (!(dp->arg_index < 0))
+ if (!(dp->arg_index == ARG_NONE))
abort ();
augmented_length = xsum (length, 1);
ENSURE_ALLOCATION (augmented_length);
}
else
{
- if (!(dp->arg_index >= 0))
+ if (!(dp->arg_index != ARG_NONE))
abort ();
if (dp->conversion == 'n')
width = 0;
if (dp->width_start != dp->width_end)
{
- if (dp->width_arg_index >= 0)
+ if (dp->width_arg_index != ARG_NONE)
{
int arg;
precision = 6;
if (dp->precision_start != dp->precision_end)
{
- if (dp->precision_arg_index >= 0)
+ if (dp->precision_arg_index != ARG_NONE)
{
int arg;
/* Construct the arguments for calling snprintf or sprintf. */
prefix_count = 0;
- if (dp->width_arg_index >= 0)
+ if (dp->width_arg_index != ARG_NONE)
{
if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
abort ();
prefixes[prefix_count++] = a.arg[dp->width_arg_index].a.a_int;
}
- if (dp->precision_arg_index >= 0)
+ if (dp->precision_arg_index != ARG_NONE)
{
if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
abort ();
{
if (!(result == resultbuf || result == NULL))
free (result);
- freea (buf);
+ if (buf_malloced != NULL)
+ free (buf_malloced);
CLEANUP ();
errno = EINVAL;
return NULL;
result = memory;
}
- freea (buf);
+ if (buf_malloced != NULL)
+ free (buf_malloced);
CLEANUP ();
*lengthp = length;
return result;
out_of_memory:
if (!(result == resultbuf || result == NULL))
free (result);
- freea (buf);
+ if (buf_malloced != NULL)
+ free (buf_malloced);
+ out_of_memory_1:
CLEANUP ();
errno = ENOMEM;
return NULL;