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// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s
namespace N1 {
namespace __attribute__((__abi_tag__)) {}
// expected-warning@-1 {{'abi_tag' attribute on non-inline namespace ignored}}
namespace N __attribute__((__abi_tag__)) {}
// expected-warning@-1 {{'abi_tag' attribute on non-inline namespace ignored}}
} // namespace N1
namespace N2 {
inline namespace __attribute__((__abi_tag__)) {}
// expected-warning@-1 {{'abi_tag' attribute on anonymous namespace ignored}}
inline namespace N __attribute__((__abi_tag__)) {}
} // namespcace N2
__attribute__((abi_tag("B", "A"))) extern int a1;
__attribute__((abi_tag("A", "B"))) extern int a1;
// expected-note@-1 {{previous declaration is here}}
__attribute__((abi_tag("A", "C"))) extern int a1;
// expected-error@-1 {{'abi_tag' C missing in original declaration}}
extern int a2;
// expected-note@-1 {{previous declaration is here}}
__attribute__((abi_tag("A")))extern int a2;
// expected-error@-1 {{cannot add 'abi_tag' attribute in a redeclaration}}
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