================
@@ -6,27 +6,20 @@
#include <stdarg.h>
-#define DERP this is an error
-
void func(...) { // expected-warning {{'...' as the only parameter of a
function is incompatible with C standards before C23}}
// Show that va_start doesn't require the second argument in C23 mode.
va_list list;
- va_start(list); // expected-warning {{passing no argument for the '...'
parameter of a variadic macro is incompatible with C standards before C23}}
expected-note@* {{macro 'va_start' defined here}}
- va_end(list);
-
- // Show that va_start doesn't expand or evaluate the second argument.
- va_start(list, DERP);
+ va_start(list);
----------------
AaronBallman wrote:
> `// expected-warning {{passing no argument for the '...' parameter of a
> variadic macro is incompatible with C standards before C23}}`
This no longer fires because the definition of `va_start` in C23 mode now
passes `__VA_ARGS__` so `list` is being passed as the variadic argument.
> `// Show that va_start doesn't expand or evaluate the second argument.`
This was changed during NB comment resolution. Now arguments are evaluated and
expanded.
https://github.com/llvm/llvm-project/pull/131166
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