clang/test/Sema/builtin-returnaddress.c

   1 // RUN: %clang_cc1 -fsyntax-only -Wframe-address -verify %s
   2 // RUN: %clang_cc1 -fsyntax-only -Wmost -verify %s
   3 // RUN: %clang_cc1 -x c++ -fsyntax-only -Wframe-address -verify %s
   4
   5 void* a(unsigned x) {
   6 return __builtin_return_address(0);
   7 }
   8
   9 void* b(unsigned x) {
  10 return __builtin_return_address(1); // expected-warning{{calling '__builtin_return_address' with a nonzero argument is unsafe}}
  11 }
  12
  13 void* c(unsigned x) {
  14 return __builtin_frame_address(0);
  15 }
  16
  17 void* d(unsigned x) {
  18 return __builtin_frame_address(1); // expected-warning{{calling '__builtin_frame_address' with a nonzero argument is unsafe}}
  19 }
  20
  21 #ifdef __cplusplus
  22 template<int N> void *RA()
  23 {
  24   return __builtin_return_address(N); // expected-warning{{calling '__builtin_return_address' with a nonzero argument is unsafe}}
  25 }
  26
  27 void *foo()
  28 {
  29  return RA<2>(); // expected-note{{in instantiation of function template specialization 'RA<2>' requested here}}
  30 }
  31 #endif