Viewing file:  va-arg-pack-len-2.c (1.17 KB) -rw-r--r--
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/* { dg-do compile } */
/* { dg-options "-O2" } */
#include <stdarg.h>
extern int error_open_missing_mode (void)
__attribute__((__error__ ("open with O_CREAT needs 3 arguments, only 2 were given")));
extern int warn_open_too_many_arguments (void)
__attribute__((__warning__ ("open called with more than 3 arguments")));
extern int myopen2 (const char *path, int oflag);
extern int myopenva (const char *path, int oflag, ...);
extern inline __attribute__((always_inline, gnu_inline)) int
myopen (const char *path, int oflag, ...)
{
if (__builtin_va_arg_pack_len () > 1)
warn_open_too_many_arguments (); /* { dg-warning "called with more than 3" } */
if (__builtin_constant_p (oflag))
{
if ((oflag & 0x40) != 0 && __builtin_va_arg_pack_len () < 1)
{
error_open_missing_mode (); /* { dg-error "needs 3 arguments, only 2 were given" } */
return myopen2 (path, oflag);
}
return myopenva (path, oflag, __builtin_va_arg_pack ());
}
if (__builtin_va_arg_pack_len () < 1)
return myopen2 (path, oflag);
return myopenva (path, oflag, __builtin_va_arg_pack ());
}
int
main (void)
{
myopen ("h", 0x43);
myopen ("i", 0x43, 0644, 0655);
return 0;
}
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