clang/test/Preprocessor/_Pragma-in-macro-arg.c

   1 // RUN: %clang_cc1 %s -verify -Wconversion
   2
   3 // Don't crash
   4 #define A(desc) _Pragma("clang diagnostic push")  _Pragma("clang diagnostic ignored \"-Wparentheses\"") _Pragma("clang diagnostic pop")
   5 #define B(desc) A(desc)
   6 B(_Pragma("clang diagnostic ignored \"-Wparentheses\""))
   7
   8
   9 #define EMPTY(x)
  10 #define INACTIVE(x) EMPTY(x)
  11
  12 #define ID(x) x
  13 #define ACTIVE(x) ID(x)
  14
  15 // This should be ignored..
  16 INACTIVE(_Pragma("clang diagnostic ignored \"-Wconversion\""))
  17
  18 #define IGNORE_CONV _Pragma("clang diagnostic ignored \"-Wconversion\"") _Pragma("clang diagnostic ignored \"-Wconversion\"")
  19
  20 // ..as should this.
  21 INACTIVE(IGNORE_CONV)
  22
  23 #define IGNORE_POPPUSH(Pop, Push, W, D) Push W D Pop
  24 IGNORE_POPPUSH(_Pragma("clang diagnostic pop"), _Pragma("clang diagnostic push"),
  25                _Pragma("clang diagnostic ignored \"-Wconversion\""), int q = (double)1.0);
  26
  27 int x1 = (double)1.0; // expected-warning {{implicit conversion}}
  28
  29 ACTIVE(_Pragma) ("clang diagnostic ignored \"-Wconversion\"")) // expected-error {{_Pragma takes a parenthesized string literal}} \
  30                                       expected-error {{expected identifier or '('}} expected-error {{expected ')'}} expected-note {{to match this '('}}
  31
  32 // This should disable the warning.
  33 ACTIVE(IGNORE_CONV)
  34
  35 int x2 = (double)1.0;