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779355f96b
pragma ms_struct has an effect on struct decls, and the effect is serialized correctly already. But the "is ms_struct currently on" state wasn't before this change. This uses the same approach as `pragma clang optimize`: When writing a module, the state isn't serialized, only when writing a pch file. llvm-svn: 262539
42 lines
1.1 KiB
C++
42 lines
1.1 KiB
C++
// Test this without pch.
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// RUN: %clang_cc1 %s -Wunknown-pragmas -Werror -triple i386-apple-darwin9 -fsyntax-only -include %s -verify -std=c++11
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// Test with pch.
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// RUN: %clang_cc1 %s -Wunknown-pragmas -Werror -triple i386-apple-darwin9 -emit-pch -o %t -std=c++11
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// RUN: %clang_cc1 %s -Wunknown-pragmas -Werror -triple i386-apple-darwin9 -fsyntax-only -include-pch %t -verify -std=c++11
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// The first run line creates a pch, and since at that point HEADER is not
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// defined, the only thing contained in the pch is the pragma. The second line
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// then includes that pch, so HEADER is defined and the actual code is compiled.
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// The check then makes sure that the pragma is in effect in the file that
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// includes the pch.
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// expected-no-diagnostics
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#ifndef HEADER
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#define HEADER
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struct SOffH {
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short m : 9;
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int q : 12;
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};
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#pragma ms_struct on
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struct SOnH {
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short m : 9;
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int q : 12;
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};
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#else
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struct SOnC {
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short m : 9;
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int q : 12;
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};
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static_assert(sizeof(SOffH) == 4, "");
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static_assert(sizeof(SOnH) == 8, "");
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static_assert(sizeof(SOnC) == 8, "");
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#endif
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