clang/test/Misc/diag-macro-backtrace2.c

   1 // RUN: not %clang_cc1 -fsyntax-only %s 2>&1 | FileCheck %s
   2
   3 #define a b
   4 #define b c
   5 #define c(x) d(x)
   6 #define d(x) x*1
   7
   8 #define e f
   9 #define f g
  10 #define g(x) h(x)
  11 #define h(x) x
  12
  13 void PR16799(void) {
  14   const char str[] = "string";
  15   a(str);
  16   // CHECK: :15:3: error: invalid operands to binary expression
  17   // CHECK:       ('const char[7]' and 'int')
  18   // CHECK:   a(str);
  19   // CHECK:   ^~~~~~
  20   // CHECK: :3:11: note: expanded from macro 'a'
  21   // CHECK: #define a b
  22   // CHECK:           ^
  23   // CHECK: :4:11: note: expanded from macro 'b'
  24   // CHECK: #define b c
  25   // CHECK:           ^
  26   // CHECK: :5:14: note: expanded from macro 'c'
  27   // CHECK: #define c(x) d(x)
  28   // CHECK:              ^~~~
  29   // CHECK: :6:15: note: expanded from macro 'd'
  30   // CHECK: #define d(x) x*1
  31   // CHECK:              ~^~
  32
  33   e(str);
  34   // CHECK: :33:5: warning: expression result unused
  35   // CHECK:   e(str);
  36   // CHECK:     ^~~
  37   // CHECK: :8:11: note: expanded from macro 'e'
  38   // CHECK: #define e f
  39   // CHECK:           ^
  40   // CHECK: :9:11: note: expanded from macro 'f'
  41   // CHECK: #define f g
  42   // CHECK:           ^
  43   // CHECK: :10:16: note: expanded from macro 'g'
  44   // CHECK: #define g(x) h(x)
  45   // CHECK:                ^
  46   // CHECK: :11:14: note: expanded from macro 'h'
  47   // CHECK: #define h(x) x
  48   // CHECK:              ^
  49 }
  50 // CHECK: 1 warning and 1 error generated.