llvm-project/clang/test/Sema/varargs-x86-64.c

// RUN: %clang_cc1 -fsyntax-only -verify %s -triple x86_64-apple-darwin9

// rdar://6726818
void f1() {
  const __builtin_va_list args2;
  (void)__builtin_va_arg(args2, int); // expected-error {{first argument to 'va_arg' is of type '__builtin_va_list const' and not 'va_list'}}
}
Update tests to use %clang_cc1 instead of 'clang-cc' or 'clang -cc1'. - This is designed to make it obvious that %clang_cc1 is a "test variable" which is substituted. It is '%clang_cc1' instead of '%clang -cc1' because it can be useful to redefine what gets run as 'clang -cc1' (for example, to set a default target). llvm-svn: 91446 2009-12-16 04:14:24 +08:00			`// RUN: %clang_cc1 -fsyntax-only -verify %s -triple x86_64-apple-darwin9`
Add a warning for questionable va_args usage. llvm-svn: 68435 2009-04-05 08:59:53 +08:00
			`// rdar://6726818`
			`void f1() {`
			`const __builtin_va_list args2;`
Daniel convinced me that accepting "const va_list" arguments to va_arg is a really really bad idea. Now that we emit an error about the unpromoted type, users should be able to understand what is going on. llvm-svn: 68447 2009-04-07 01:07:34 +08:00			`(void)__builtin_va_arg(args2, int); // expected-error {{first argument to 'va_arg' is of type '__builtin_va_list const' and not 'va_list'}}`
Add a warning for questionable va_args usage. llvm-svn: 68435 2009-04-05 08:59:53 +08:00			`}`