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/* Verify that strlen doesn't (inadvertently) use the size of an array
of char pointers to put an upper bound on the length of the strings
they point to.
{ dg-do compile }
{ dg-options "-O2 -Wall -fdump-tree-optimized" } */
void eaa_test (void)
{
extern char eaa[4][4];
char (*p)[4] = eaa;
if (!*p)
return;
/* The longest string stored in EAA is 15 characters. */
if (__builtin_strlen (*p) > 14)
{
extern void eaa_ok (void);
eaa_ok ();
}
if (__builtin_strlen (*p) > 15)
{
extern void eaa_fail (void);
eaa_fail ();
}
}
/* { dg-final { scan-tree-dump-times "eaa_ok" 1 "optimized" } }
{ dg-final { scan-tree-dump-not "eaa_fail" "optimized" } } */
void epa_test (void)
{
extern char* epa[4];
char **p = epa;
if (*p && __builtin_strlen (*p) > 123)
{
extern void epa_ok (void);
epa_ok ();
}
}
/* { dg-final { scan-tree-dump-times "epa_ok" 1 "optimized" } } */
static char* spa[4];
void spa_test (void)
{
char **p = spa;
if (*p && __builtin_strlen (*p) > 123)
{
extern void spa_ok ();
spa_ok ();
}
}
/* { dg-final { scan-tree-dump-times "spa_ok" 1 "optimized" } } */
void sink (void*, ...);
void init (void)
{
/* Make believe even the static array SA may be non-zero. */
sink (spa);
}
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