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llvm-project/clang/test/Lexer/has_feature_exceptions.cpp

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Lex: Fix __has_feature(cxx_exceptions) for objective C++ At one point, -fexceptions was a synonym for -fcxx-exceptions. While the driver options still enables cxx-exceptions by default, the cc1 flag is purely about exception tables and this doesn't account for objective C exceptions. Because of this, checking for the cxx_exceptions feature in objective C++ often gives the wrong answer. The cxx_exceptions feature should be based on the -fcxx-exceptions cc1 flag, not -fexceptions. Furthermore, at some point the tests were changed to use cc1 even though they were testing the driver behaviour. We're better off testing both the driver and cc1 here. llvm-svn: 206352
2014-04-16 10:56:48 +08:00
// RUN: %clang -E -fexceptions %s -o - | FileCheck --check-prefix=CHECK-EXCEPTIONS %s
// RUN: %clang -E -fexceptions -fno-cxx-exceptions %s -o - | FileCheck --check-prefix=CHECK-NO-EXCEPTIONS %s
// RUN: %clang -E -fno-exceptions %s -o - | FileCheck --check-prefix=CHECK-NO-EXCEPTIONS %s
// RUN: %clang_cc1 -E -fcxx-exceptions %s -o - | FileCheck --check-prefix=CHECK-EXCEPTIONS %s
// RUN: %clang_cc1 -E -fobjc-exceptions %s -o - | FileCheck --check-prefix=CHECK-NO-EXCEPTIONS %s
// RUN: %clang_cc1 -E -fexceptions %s -o - | FileCheck --check-prefix=CHECK-NO-EXCEPTIONS %s
tests: Use %clangxx when using driver for C++, in case C++ support is disabled. llvm-svn: 107153
2010-06-30 00:52:24 +08:00
// RUN: %clang_cc1 -E %s -o - | FileCheck --check-prefix=CHECK-NO-EXCEPTIONS %s
Add 'has_feature(cxx_exceptions)' to allow code to determine via preprocessor logic if C++ exceptions are enabled. llvm-svn: 90378
2009-12-03 09:34:15 +08:00
#if __has_feature(cxx_exceptions)
int foo();
#else
int bar();
#endif
// CHECK-EXCEPTIONS: foo
// CHECK-NO-EXCEPTIONS: bar