gcc/testsuite/gcc.dg/cpp/tr-warn1.c

   1 /* Test for warnings about nontraditional directives.  */
   2 /* { dg-do preprocess } */
   3 /* { dg-options "-pedantic -Wtraditional -fno-show-column" } */
   4
   5 /* Block 1: K+R directives should have the # indented.  */
   6
   7 #define foo bar         /* { dg-bogus "indented" "^#kandr"     } */
   8 # define foo bar        /* { dg-bogus "indented" "^# kandr"    } */
   9  #define foo bar        /* { dg-warning "indented" "^ #kandr"  } */
  10  # define foo bar       /* { dg-warning "indented" "^ # kandr" } */
  11
  12 /* Block 2: C89 directives should not have the # indented.  */
  13
  14 #pragma whatever        /* { dg-warning "indented" "^#c89"     } */
  15 # pragma whatever       /* { dg-warning "indented" "^# c89"    } */
  16  #pragma whatever       /* { dg-bogus "indented" "^ #c89"      } */
  17  # pragma whatever      /* { dg-bogus "indented" "^ # c89"     } */
  18
  19 /* Block 3: Extensions should not have the # indented,
  20    _and_ they should get a -pedantic warning. */
  21
  22 #assert foo(bar)        /* { dg-warning "indented" "^#ext"    } */
  23 # assert bar(baz)       /* { dg-warning "indented" "^# ext"   } */
  24  #assert baz(quux)      /* { dg-bogus "indented" "^ #ext"     } */
  25  # assert quux(weeble)  /* { dg-bogus "indented" "^ # ext"    } */
  26
  27 /* We warn of #elif regardless of whether we're skipping or not, and
  28    do not warn about indentaion.  */
  29 #if 0
  30 #if 1
  31 #elif 1                 /* { dg-warning "#elif" "#elif skipping" }  */
  32 #endif
  33 #elif 0                 /* { dg-warning "#elif" "#elif not skipping" }  */
  34 #endif
  35
  36 /* { dg-warning "GCC extension" "extension warning" { target *-*-* } 22 } */
  37 /* { dg-warning "GCC extension" "extension warning" { target *-*-* } 23 } */
  38 /* { dg-warning "GCC extension" "extension warning" { target *-*-* } 24 } */
  39 /* { dg-warning "GCC extension" "extension warning" { target *-*-* } 25 } */