llvm-project/clang/test/Parser/cxx1z-nested-namespace-defi...

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// RUN: cp %s %t
// RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++98
// RUN: not %clang_cc1 -x c++ -fixit %t -Werror -DFIXIT
// RUN: %clang_cc1 -x c++ %t -DFIXIT
// RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++17 -Wc++14-compat
namespace foo1::foo2::foo3 {
#if __cplusplus <= 201400L
// expected-warning@-2 {{nested namespace definition is a C++17 extension; define each namespace separately}}
#else
// expected-warning@-4 {{nested namespace definition is incompatible with C++ standards before C++17}}
#endif
int foo(int x) { return x; }
}
#ifndef FIXIT
inline namespace goo::bar { // expected-error {{nested namespace definition cannot be 'inline'}} expected-warning 0-1{{C++11 feature}}
int n;
}
int m = goo::bar::n;
#endif
int foo(int x) {
return foo1::foo2::foo3::foo(x);
}
namespace bar1 {
namespace bar2 {
namespace bar3 {
int bar(int x) { return x; }
}
}
}
int bar(int x) {
return bar1::bar2::bar3::bar(x);
}