1 // This should warn by default. 2 // RUN: %clang_cc1 %s 2>&1 | grep "warning: foo" 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 // RUN: %clang_cc1 %s -Wno-cpp 2>&1 | not grep diagnostic 8 9 // -Werror can map all warnings to error. 10 // RUN: not %clang_cc1 %s -Werror 2>&1 | grep "error: foo" 11 12 // -Werror can map this one warning to error. 13 // RUN: not %clang_cc1 %s -Werror=#warnings 2>&1 | grep "error: foo" 14 // RUN: not %clang_cc1 %s -Werror=#warnings -W#warnings 2>&1 | grep "error: foo" 15 16 // -Wno-error= overrides -Werror. -Wno-error applies to a subsequent warning of the same name. 17 // RUN: %clang_cc1 %s -Werror -Wno-error=#warnings 2>&1 | grep "warning: foo" 18 // RUN: %clang_cc1 %s -Werror -Wno-error=#warnings -W#warnings 2>&1 | grep "warning: foo" 19 20 // -Wno-error overrides -Werror. PR4715 21 // RUN: %clang_cc1 %s -Werror -Wno-error 2>&1 | grep "warning: foo" 22 23 #warning foo 24 25