clang/test/Preprocessor/Weverything_pragma.c

   1 // RUN: %clang_cc1 -Weverything   -fsyntax-only -verify %s
   2
   3 // Test that the pragma overrides command line option -Weverythings,
   4
   5 // a diagnostic with DefaultIgnore. This is part of a group 'unused-macro'
   6 // but -Weverything forces it
   7 #define UNUSED_MACRO1 1 // expected-warning{{macro is not used}}
   8
   9 void foo(void) // expected-warning {{no previous prototype for function}}
  10 // expected-note@-1{{declare 'static' if the function is not intended to be used outside of this translation unit}}
  11 {
  12  // A diagnostic without DefaultIgnore, and not part of a group.
  13  (void) 'ab'; // expected-warning {{multi-character character constant}}
  14
  15 #pragma clang diagnostic warning "-Weverything" // Should not change anyhting.
  16 #define UNUSED_MACRO2 1 // expected-warning{{macro is not used}}
  17  (void) 'cd'; // expected-warning {{multi-character character constant}}
  18
  19 #pragma clang diagnostic ignored "-Weverything" // Ignore warnings now.
  20 #define UNUSED_MACRO2 1 // no warning
  21  (void) 'ef'; // no warning here
  22
  23 #pragma clang diagnostic warning "-Weverything" // Revert back to warnings.
  24 #define UNUSED_MACRO3 1 // expected-warning{{macro is not used}}
  25  (void) 'gh'; // expected-warning {{multi-character character constant}}
  26
  27 #pragma clang diagnostic error "-Weverything"  // Give errors now.
  28 #define UNUSED_MACRO4 1 // expected-error{{macro is not used}}
  29  (void) 'ij'; // expected-error {{multi-character character constant}}
  30 }