1 // This should warn by default.
2 // RUN: %clang_cc1 %s 2>&1 | grep "warning:"
3 
4 // This should not emit anything.
5 // RUN: %clang_cc1 %s -w 2>&1 | not grep diagnostic
6 // RUN: %clang_cc1 %s -Wno-#warnings 2>&1 | not grep diagnostic
7 
8 // -Werror can map all warnings to error.
9 // RUN: not %clang_cc1 %s -Werror 2>&1 | grep "error:"
10 
11 // -Werror can map this one warning to error.
12 // RUN: not %clang_cc1 %s -Werror=#warnings 2>&1 | grep "error:"
13 
14 // -Wno-error= overrides -Werror.  rdar://3158301
15 // RUN: %clang_cc1 %s -Werror -Wno-error=#warnings 2>&1 | grep "warning:"
16 
17 // -Wno-error overrides -Werror.  PR4715
18 // RUN: %clang_cc1 %s -Werror -Wno-error 2>&1 | grep "warning:"
19 
20 #warning foo
21 
22 
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