| 1 | // RUN: %clang_cc1 -std=c++98 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
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| 2 | // RUN: %clang_cc1 -std=c++11 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
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| 3 | // RUN: %clang_cc1 -std=c++14 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
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| 4 | // RUN: %clang_cc1 -std=c++17 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
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| 5 | // RUN: %clang_cc1 -std=c++2a %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
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| 6 | |
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| 7 | namespace dr1113 { // dr1113: partial |
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| 8 | namespace named { |
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| 9 | extern int a; // expected-note {{previous}} |
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| 10 | static int a; // expected-error {{static declaration of 'a' follows non-static}} |
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| 11 | } |
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| 12 | namespace { |
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| 13 | extern int a; |
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| 14 | static int a; // ok, both declarations have internal linkage |
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| 15 | int b = a; |
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| 16 | } |
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| 17 | |
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| 18 | // FIXME: Per DR1113 and DR4, this is ill-formed due to ambiguity: the second |
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| 19 | // 'f' has internal linkage, and so does not have C language linkage, so is |
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| 20 | // not a redeclaration of the first 'f'. |
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| 21 | // |
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| 22 | // To avoid a breaking change here, Clang ignores the "internal linkage" effect |
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| 23 | // of anonymous namespaces on declarations declared within an 'extern "C"' |
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| 24 | // linkage-specification. |
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| 25 | extern "C" void f(); |
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| 26 | namespace { |
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| 27 | extern "C" void f(); |
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| 28 | } |
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| 29 | void g() { f(); } |
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| 30 | } |
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| 31 | |
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