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98dd085d1f
This adds support for static_assert() (and _Static_assert()) in @interface/@implementation ivar lists and in @interface method declarations. It was already supported in @implementation blocks outside of the ivar lists. The assert AST nodes are added at file scope, matching where other (non-Objective-C) declarations at @interface / @implementation level go (cf `allTUVariables`). Also add a `__has_feature(objc_c_static_assert)` that's true in C11 (and `__has_extension(objc_c_static_assert)` that's always true) and `__has_feature(objc_cxx_static_assert)` that's true in C++11 modea fter this patch, so it's possible to check if this is supported. Differential Revision: https://reviews.llvm.org/D59223 llvm-svn: 356148
55 lines
1.1 KiB
Objective-C
55 lines
1.1 KiB
Objective-C
// RUN: %clang_cc1 -fobjc-runtime=macosx-fragile -fsyntax-only -verify -Wno-objc-root-class %s
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// RUN: %clang_cc1 -std=c89 -fobjc-runtime=macosx-fragile -fsyntax-only -verify -Wno-objc-root-class %s
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#if __STDC_VERSION__ >= 201112L
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#if !__has_feature(objc_c_static_assert)
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#error failed
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#endif
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#if !__has_extension(objc_c_static_assert)
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#error failed
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#endif
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@interface A {
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int a;
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_Static_assert(1, "");
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_Static_assert(0, ""); // expected-error {{static_assert failed}}
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_Static_assert(a, ""); // expected-error {{use of undeclared identifier 'a'}}
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_Static_assert(sizeof(a), ""); // expected-error {{use of undeclared identifier 'a'}}
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}
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_Static_assert(1, "");
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@end
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struct S {
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@defs(A);
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};
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#else
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// _Static_assert is available before C11 as an extension, but -pedantic
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// warns on it.
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#if __has_feature(objc_c_static_assert)
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#error failed
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#endif
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#if !__has_extension(objc_c_static_assert)
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#error failed
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#endif
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@interface A {
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int a;
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_Static_assert(1, "");
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_Static_assert(0, ""); // expected-error {{static_assert failed}}
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}
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_Static_assert(1, "");
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@end
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#endif
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