clang/test/Preprocessor/pragma_diagnostic.c

   1 // RUN: %clang_cc1 -fsyntax-only -verify -Wno-undef %s
   2 // RUN: %clang_cc1 -fsyntax-only -verify -Wno-undef -Wno-unknown-warning-option -DAVOID_UNKNOWN_WARNING %s
   3 // RUN: %clang_cc1 -fsyntax-only -verify -Werror=undef -DINITIAL_UNDEF %s
   4
   5 #ifdef INITIAL_UNDEF
   6 #if FOO    // expected-error {{'FOO' is not defined}}
   7 #endif
   8 #else
   9 #if FOO    // ok.
  10 #endif
  11 #endif
  12
  13 #pragma GCC diagnostic warning "-Wundef"
  14
  15 #if FOO    // expected-warning {{'FOO' is not defined}}
  16 #endif
  17
  18 #pragma GCC diagnostic ignored "-Wun" "def"
  19
  20 #if FOO    // ok.
  21 #endif
  22
  23 #pragma GCC diagnostic error "-Wundef"
  24
  25 #if FOO    // expected-error {{'FOO' is not defined}}
  26 #endif
  27
  28
  29 #define foo error
  30 #pragma GCC diagnostic foo "-Wundef"  // expected-warning {{pragma diagnostic expected 'error', 'warning', 'ignored', 'fatal', 'push', or 'pop'}}
  31
  32 #pragma GCC diagnostic error 42  // expected-error {{expected string literal in pragma diagnostic}}
  33
  34 #pragma GCC diagnostic error "-Wundef" 42  // expected-warning {{unexpected token in pragma diagnostic}}
  35 #pragma GCC diagnostic error "invalid-name"  // expected-warning {{pragma diagnostic expected option name (e.g. "-Wundef")}}
  36
  37 #pragma GCC diagnostic error "-Winvalid-name"
  38 #ifndef AVOID_UNKNOWN_WARNING
  39 // expected-warning@-2 {{unknown warning group '-Winvalid-name', ignored}}
  40 #endif
  41
  42 // From GH13920
  43 #pragma clang diagnostic push ignored "-Wdeprecated-declarations" // expected-warning {{unexpected token in pragma diagnostic}}
  44 #pragma clang diagnostic pop ignored "-Wdeprecated-declarations"  // expected-warning {{unexpected token in pragma diagnostic}}
  45
  46
  47 // Testing pragma clang diagnostic with -Weverything
  48 void ppo(void){} // First test that we do not diagnose on this.
  49
  50 #pragma clang diagnostic warning "-Weverything"
  51 void ppp(void){} // expected-warning {{no previous prototype for function 'ppp'}}
  52 // expected-note@-1{{declare 'static' if the function is not intended to be used outside of this translation unit}}
  53
  54 #pragma clang diagnostic ignored "-Weverything" // Reset it.
  55 void ppq(void){}
  56
  57 #pragma clang diagnostic error "-Weverything" // Now set to error
  58 void ppr(void){} // expected-error {{no previous prototype for function 'ppr'}}
  59 // expected-note@-1{{declare 'static' if the function is not intended to be used outside of this translation unit}}
  60
  61 #pragma clang diagnostic warning "-Weverything" // Set to warning
  62 void pps(void){} // expected-warning {{no previous prototype for function 'pps'}}
  63 // expected-note@-1{{declare 'static' if the function is not intended to be used outside of this translation unit}}