clang/test/Lexer/gnu-flags.c

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s -DNONE
   2 // RUN: %clang_cc1 -fsyntax-only -verify %s -DALL -Wgnu
   3 // RUN: %clang_cc1 -fsyntax-only -verify %s -DALL \
   4 // RUN:   -Wgnu-zero-variadic-macro-arguments \
   5 // RUN:   -Wgnu-imaginary-constant -Wgnu-binary-literal -Wgnu-zero-line-directive
   6 // RUN: %clang_cc1 -fsyntax-only -verify %s -DNONE -Wgnu \
   7 // RUN:   -Wno-gnu-zero-variadic-macro-arguments \
   8 // RUN:   -Wno-gnu-imaginary-constant -Wno-gnu-binary-literal -Wno-gnu-zero-line-directive
   9 // Additional disabled tests:
  10 // %clang_cc1 -fsyntax-only -verify %s -DZEROARGS -Wgnu-zero-variadic-macro-arguments
  11 // %clang_cc1 -fsyntax-only -verify %s -DIMAGINARYCONST -Wgnu-imaginary-constant
  12 // %clang_cc1 -fsyntax-only -verify %s -DBINARYLITERAL -Wgnu-binary-literal
  13 // %clang_cc1 -fsyntax-only -verify %s -DLINE0 -Wgnu-zero-line-directive
  14
  15 #if NONE
  16 // expected-no-diagnostics
  17 #endif
  18
  19
  20 #if ALL || ZEROARGS
  21 // expected-warning@+9 {{must specify at least one argument for '...' parameter of variadic macro}}
  22 // expected-note@+4 {{macro 'efoo' defined here}}
  23 // expected-warning@+3 {{token pasting of ',' and __VA_ARGS__ is a GNU extension}}
  24 #endif
  25
  26 #define efoo(format, args...) foo(format , ##args)
  27
  28 void foo( const char* c )
  29 {
  30   efoo("6");
  31 }
  32
  33
  34 #if ALL || IMAGINARYCONST
  35 // expected-warning@+3 {{imaginary constants are a GNU extension}}
  36 #endif
  37
  38 float _Complex c = 1.if;
  39
  40
  41 #if ALL || BINARYLITERAL
  42 // expected-warning@+3 {{binary integer literals are a GNU extension}}
  43 #endif
  44
  45 int b = 0b0101;
  46
  47
  48 // This case is handled differently because lit has a bug whereby #line 0 is reported to be on line 4294967295
  49 // http://llvm.org/bugs/show_bug.cgi?id=16952
  50 #if ALL || LINE0
  51 #line 0 // expected-warning {{#line directive with zero argument is a GNU extension}}
  52 #else
  53 #line 0
  54 #endif
  55
  56 // WARNING: Do not add more tests after the #line 0 line!  Add them before the LINE0 test