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| author | John McCall <rjmccall@apple.com> | 2015-12-10 23:31:01 +0000 |
|---|---|---|
| committer | John McCall <rjmccall@apple.com> | 2015-12-10 23:31:01 +0000 |
| commit | ac200add36b40904bae8bbe7070e60c7f60b7c35 (patch) | |
| tree | c3749eb0b70ec64d73d88348efbaa03589990c40 /test/Lexer | |
| parent | ddd39efaedfdebb02425a4483f6ecd4a5d35866e (diff) | |
In Objective-C, ignore attempts to redefine the ARC/GC qualifier macros.
This works around existing system headers which unconditionally
redefine these macros.
This is reasonably safe to do because we used to warn about it anyway
(outside of system headers). Continue to warn if the redefinition
would have changed the expansion. Still permit redefinition if the
macro is explicitly #undef'ed first.
rdar://23788307
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@255311 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Lexer')
| -rw-r--r-- | test/Lexer/objc_macros.m | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/test/Lexer/objc_macros.m b/test/Lexer/objc_macros.m new file mode 100644 index 0000000000..0223bed4e3 --- /dev/null +++ b/test/Lexer/objc_macros.m @@ -0,0 +1,22 @@ +// RUN: %clang_cc1 -fsyntax-only "-triple" "x86_64-apple-macosx10.10.0" -fobjc-runtime-has-weak -fobjc-weak %s -verify %s + +#define __strong +// expected-warning@-1 {{ignoring redefinition of Objective-C qualifier macro}} +#define __weak +// expected-warning@-1 {{ignoring redefinition of Objective-C qualifier macro}} +#define __unsafe_unretained +// expected-warning@-1 {{ignoring redefinition of Objective-C qualifier macro}} +#define __autoreleased +// No warning because this is the default expansion anyway. + +// Check that this still expands to the right text. +void test() { + goto label; // expected-error {{cannot jump from this goto statement to its label}} + __weak id x; // expected-note {{jump bypasses initialization of __weak variable}} +label: + return; +} + +#undef __strong +#define __strong +// No warning. |