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      1 // This should warn by default.
      2 // RUN: %clang_cc1 %s 2>&1 | grep "warning:"
      3 // This should not emit anything.
      4 // RUN: %clang_cc1 %s -Wno-extra-tokens 2>&1 | not grep diagnostic
      5 
      6 // -Werror can map all warnings to error.
      7 // RUN: not %clang_cc1 %s -Werror 2>&1 | grep "error:"
      8 
      9 // -Werror can map this one warning to error.
     10 // RUN: not %clang_cc1 %s -Werror=extra-tokens 2>&1 | grep "error:"
     11 
     12 // Mapping unrelated diags to errors doesn't affect this one.
     13 // RUN: %clang_cc1 %s -Werror=trigraphs 2>&1 | grep "warning:"
     14 
     15 // This should stay a warning with -pedantic.
     16 // RUN: %clang_cc1 %s -pedantic 2>&1 | grep "warning:"
     17 
     18 // This should emit an error with -pedantic-errors.
     19 // RUN: not %clang_cc1 %s -pedantic-errors 2>&1 | grep "error:"
     20 
     21 // This should emit a warning, because -Wfoo overrides -pedantic*.
     22 // RUN: %clang_cc1 %s -pedantic-errors -Wextra-tokens 2>&1 | grep "warning:"
     23 
     24 // This should emit nothing, because -Wno-extra-tokens overrides -pedantic*
     25 // RUN: %clang_cc1 %s -pedantic-errors -Wno-extra-tokens 2>&1 | not grep diagnostic
     26 
     27 #ifdef foo
     28 #endif bad // extension!
     29 
     30 int x;
     31