31 lines
1.2 KiB
C++
31 lines
1.2 KiB
C++
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// RUN: %clang_cc1 -std=c++98 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++11 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++14 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++17 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++2a %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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namespace dr1113 { // dr1113: partial
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namespace named {
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extern int a; // expected-note {{previous}}
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static int a; // expected-error {{static declaration of 'a' follows non-static}}
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}
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namespace {
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extern int a;
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static int a; // ok, both declarations have internal linkage
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int b = a;
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}
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// FIXME: Per DR1113 and DR4, this is ill-formed due to ambiguity: the second
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// 'f' has internal linkage, and so does not have C language linkage, so is
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// not a redeclaration of the first 'f'.
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//
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// To avoid a breaking change here, Clang ignores the "internal linkage" effect
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// of anonymous namespaces on declarations declared within an 'extern "C"'
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// linkage-specification.
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extern "C" void f();
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namespace {
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extern "C" void f();
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}
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void g() { f(); }
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}
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