81739c39db
We emit a macro definition only in a module defining it. But it means that if another module has an identifier with the same name as the macro, the users of such module won't be able to use the macro anymore. Fix by storing that an identifier has a macro definition that's not in a current module (`MacroDirectivesOffset == 0`). This way `IdentifierLookupVisitor` knows not to stop at the first module with an identifier but to keep checking included modules for the actual macro definition. Fixes issue #32040. rdar://30258278
30 lines
972 B
C
30 lines
972 B
C
// RUN: rm -rf %t
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// RUN: split-file %s %t
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// RUN: %clang_cc1 -fmodules -fimplicit-module-maps -fmodules-cache-path=%t/modules.cache \
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// RUN: -fsyntax-only %t/test.c -verify
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// Test again with the populated module cache.
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// RUN: %clang_cc1 -fmodules -fimplicit-module-maps -fmodules-cache-path=%t/modules.cache \
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// RUN: -fsyntax-only %t/test.c -verify
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// Test that an identifier with the same name as a macro doesn't hide this
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// macro from the includers.
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//--- macro-definition.h
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#define __P(protos) ()
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#define __Q(protos) ()
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//--- macro-transitive.h
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#include "macro-definition.h"
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void test(int __P) {} // not "interesting" identifier
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struct __Q {}; // "interesting" identifier
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//--- module.modulemap
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module MacroDefinition { header "macro-definition.h" export * }
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module MacroTransitive { header "macro-transitive.h" export * }
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//--- test.c
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// expected-no-diagnostics
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#include "macro-transitive.h"
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void foo __P(());
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void bar __Q(());
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