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x86 regex.c failure from Jim Meyering.

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* compile/980329-1.c: New test.

From-SVN: r18975
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Jim Wilson 1998-04-03 12:29:04 +00:00 • committed by Jim Wilson
parent b3e401c25a
commit 1f3b6a3ebe
2 changed files with 75 additions and 0 deletions
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3
gcc/testsuite/gcc.c-torture/ChangeLog
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@ -1,3 +1,6 @@
Fri Apr 3 12:27:49 1998 Jim Wilson <wilson@cygnus.com>
* compile/980329-1.c: New test.
Mon Feb 23 15:16:53 1998 Robert Lipe <robertl@dgii.com>
From Bruno Haible <haible@ilog.fr>:

72
gcc/testsuite/gcc.c-torture/compile/980329-1.c Normal file
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typedef unsigned long int size_t;
struct re_pattern_buffer
{
unsigned char *buffer;
unsigned long int used;
};
struct re_registers
{
int *start;
};
static const char **regstart, **regend;
static const char **old_regend;
static int
re_match_2_internal (struct re_pattern_buffer *bufp,
struct re_registers *regs)
{
unsigned char *p = bufp->buffer;
unsigned char *pend = p + bufp->used;
for (;;)
{
int highest_active_reg = 1;
if (bufp)
{
int i;
for (i = 1;; i++)
regs->start[i] = 0;
}
switch ((unsigned int) *p++)
{
case 1:
{
unsigned char r = *p;
if (r)
highest_active_reg = r;
}
if (p + 2 == pend)
{
char is_a_jump_n = 0;
int mcnt = 0;
unsigned char *p1;
p1 = p + 2;
switch (*p1++)
{
case 2:
is_a_jump_n = 1;
case 1:
do { do { mcnt = *p1; } while (0); p1 += 2; } while (0);
if (is_a_jump_n)
p1 = 0;
}
if (mcnt && *p1 == 0)
{
unsigned r;
for (r = 0; r < (unsigned) *p + (unsigned) *(p + 1); r++)
{
if (regend[0] >= regstart[r])
regend[r] = old_regend[r];
}
do { while (0 < highest_active_reg + 1) { } } while (0);
}
}
}
}
return -1;
}