derek.holloway
7502bf64a4
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35 lines
2.0 KiB
C++
35 lines
2.0 KiB
C++
// RUN: %clang_cc1 -std=c++98 %s -verify=expected -fexceptions -fcxx-exceptions -pedantic-errors -ast-dump | FileCheck %s
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// RUN: %clang_cc1 -std=c++11 %s -verify=expected -fexceptions -fcxx-exceptions -pedantic-errors -ast-dump | FileCheck %s
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// RUN: %clang_cc1 -std=c++14 %s -verify=expected -fexceptions -fcxx-exceptions -pedantic-errors -ast-dump | FileCheck %s
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// RUN: %clang_cc1 -std=c++17 %s -verify=expected -fexceptions -fcxx-exceptions -pedantic-errors -ast-dump | FileCheck %s
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// RUN: %clang_cc1 -std=c++20 %s -verify=expected -fexceptions -fcxx-exceptions -pedantic-errors -ast-dump | FileCheck %s
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// RUN: %clang_cc1 -std=c++23 %s -verify=expected -fexceptions -fcxx-exceptions -pedantic-errors -ast-dump | FileCheck %s
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// RUN: %clang_cc1 -std=c++2c %s -verify=expected -fexceptions -fcxx-exceptions -pedantic-errors -ast-dump | FileCheck %s
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// expected-no-diagnostics
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namespace cwg1818 { // cwg1818: 3.4
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extern "C" void f() {
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// This declaration binds name 'g' in the scope of function 'f',
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// but its target scope corresponds to namespace 'cwg1818' (_N4988_.[dcl.meaning]/3.5).
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// Linkage specification of 'f' applies to 'g' per _N4988_.[dcl.link]/5.
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void g();
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}
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// Target scope of this declaration is naturally the one
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// that corresponds to namespace 'cwg1818',
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// which makes it declare the same entity
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// as the previous declaration per _N4988_.[basic.link]/8,
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// turning it into a redeclaration per _N4988_.[basic.def]/1.
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// Then _N4988_.[dcl.link]/6 applies, making it inherit
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// the (С) language linkage of the previous declaration.
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void g();
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} // namespace cwg1818
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// Check that the former 'g' has C language linkage,
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// then that the latter 'g' is considered to be a redeclaration of it,
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// which would make the latter 'g' inherit C language linkage from the former 'g'.
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// CHECK: LinkageSpecDecl [[LINKAGE_DECL:0x[0-9a-f]+]] {{.*}} C
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// CHECK: FunctionDecl [[FIRST_DECL:0x[0-9a-f]+]] parent [[LINKAGE_DECL]] {{.*}} g 'void ()'
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// CHECK: FunctionDecl {{.*}} prev [[FIRST_DECL]] {{.*}} g 'void ()'
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