Viewing file:  builtin-sprintf-4.c (1.62 KB) -rw-r--r--
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/* PR middle-end/78461 - [7 Regression] ICE: in operator+=, at
gimple-ssa-sprintf.c:214
Disable warnings to exercise code paths through the pass that may
not be exercised when the -Wformat-overflow option is in effect. */
/* { dg-do compile }
{ dg-options "-O2 -fdump-tree-optimized -w" } */
#define CAT(s, n) s ## n
#define FAIL(line) CAT (failure_on_line_, line)
/* Emit a call to a function named failure_on_line_NNN when EXPR is false. */
#define ASSERT(expr) \
do { \
extern void FAIL (__LINE__)(void); \
if (!(expr)) FAIL (__LINE__)(); \
} while (0)
#define KEEP(line) CAT (keep_call_on_line_, line)
/* Emit a call to a function named keep_call_on_line_NNN when EXPR is true.
Used to verify that the expression need not be the only one that holds. */
#define ASSERT_MAYBE(expr) \
do { \
extern void KEEP (__LINE__)(void); \
if (expr) KEEP (__LINE__)(); \
} while (0)
int f0 (const char *s)
{
int n = __builtin_snprintf (0, 0, "%.*s%08x", 1, s, 1);
ASSERT (7 < n && n < 10);
ASSERT_MAYBE (8 == n);
ASSERT_MAYBE (9 == n);
return n;
}
char buf[64];
int f1 (const char *s)
{
int n = __builtin_snprintf (buf, 64, "%.*s%08x", 1, s, 1);
ASSERT (7 < n && n < 10);
ASSERT_MAYBE (8 == n);
ASSERT_MAYBE (9 == n);
return n;
}
int f2 (const char *s)
{
int n = __builtin_snprintf (0, 0, "%.*s", 2, s);
ASSERT (0 <= n && n <= 2);
ASSERT_MAYBE (0 == n);
ASSERT_MAYBE (1 == n);
ASSERT_MAYBE (2 == n);
return n;
}
/* { dg-final { scan-tree-dump-not "failure_on_line" "optimized"} }
{ dg-final { scan-tree-dump-times "keep_call_on_line" 7 "optimized"} } */
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