xref: /llvm-project/clang/test/Sema/varargs_unreachable.c (revision 0f1c1be1968076d6f96f8a7bcc4a15cf195ecd97) 
1 // RUN: %clang_cc1 -fsyntax-only -verify %s -triple x86_64-apple-darwin9
2 // expected-no-diagnostics
3 
4 // Do not warn about undefined behavior of parameter argument types in
5 // unreachable code in a macro.
6 #define VA_ARG_RDAR12322000(Marker, TYPE)         ((sizeof (TYPE) < sizeof (UINTN_RDAR12322000)) ? (TYPE)(__builtin_va_arg (Marker, UINTN_RDAR12322000)) : (TYPE)(__builtin_va_arg (Marker, TYPE)))
7 
8 // 64-bit system
9 typedef unsigned long long  UINTN_RDAR12322000;
10 
test_VA_ARG_RDAR12322000(__builtin_va_list Marker)11 int test_VA_ARG_RDAR12322000 (__builtin_va_list Marker)
12 {
13   return VA_ARG_RDAR12322000 (Marker, short); // no-warning
14 }