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#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
volatile int should_optimize;
int
__attribute__((noinline))
__fprintf_chk (FILE *f, int flag, const char *fmt, ...)
{
va_list ap;
int ret;
#ifdef __OPTIMIZE__
if (should_optimize)
abort ();
#endif
should_optimize = 1;
va_start (ap, fmt);
ret = vfprintf (f, fmt, ap);
va_end (ap);
return ret;
}
int
main (void)
{
#define test(ret, opt, args...) \
should_optimize = opt; \
__fprintf_chk (stdout, 1, args); \
if (!should_optimize) \
abort (); \
should_optimize = 0; \
if (__fprintf_chk (stdout, 1, args) != ret) \
abort (); \
if (!should_optimize) \
abort ();
test (5, 1, "hello");
test (6, 1, "hello\n");
test (1, 1, "a");
test (0, 1, "");
test (5, 1, "%s", "hello");
test (6, 1, "%s", "hello\n");
test (1, 1, "%s", "a");
test (0, 1, "%s", "");
test (1, 1, "%c", 'x');
test (7, 0, "%s\n", "hello\n");
test (2, 0, "%d\n", 0);
return 0;
}
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