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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 llvm-svn: 255311
23 lines
811 B
Objective-C
23 lines
811 B
Objective-C
// RUN: %clang_cc1 -fsyntax-only "-triple" "x86_64-apple-macosx10.10.0" -fobjc-runtime-has-weak -fobjc-weak %s -verify %s
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#define __strong
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// expected-warning@-1 {{ignoring redefinition of Objective-C qualifier macro}}
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#define __weak
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// expected-warning@-1 {{ignoring redefinition of Objective-C qualifier macro}}
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#define __unsafe_unretained
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// expected-warning@-1 {{ignoring redefinition of Objective-C qualifier macro}}
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#define __autoreleased
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// No warning because this is the default expansion anyway.
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// Check that this still expands to the right text.
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void test() {
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goto label; // expected-error {{cannot jump from this goto statement to its label}}
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__weak id x; // expected-note {{jump bypasses initialization of __weak variable}}
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label:
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return;
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}
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#undef __strong
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#define __strong
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// No warning.
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