| // RUN: %clang_cc1 -fsyntax-only -verify -Wtentative-definition-compat %s |
| // RUN: %clang_cc1 -fsyntax-only -verify -Wc++-compat %s |
| // RUN: %clang_cc1 -fsyntax-only -verify=good %s |
| // RUN: %clang_cc1 -fsyntax-only -verify=cxx -x c++ %s |
| // good-no-diagnostics |
| |
| int i; // expected-note {{previous declaration is here}} \ |
| cxx-note {{previous definition is here}} |
| int i; // expected-warning {{duplicate declaration of 'i' is invalid in C++}} \ |
| cxx-error {{redefinition of 'i'}} |
| |
| int j = 12; // expected-note {{previous declaration is here}} \ |
| cxx-note {{previous definition is here}} |
| int j; // expected-warning {{duplicate declaration of 'j' is invalid in C++}} \ |
| cxx-error {{redefinition of 'j'}} |
| |
| int k; // expected-note {{previous declaration is here}} \ |
| cxx-note {{previous definition is here}} |
| int k = 12; // expected-warning {{duplicate declaration of 'k' is invalid in C++}} \ |
| cxx-error {{redefinition of 'k'}} |
| |
| // Cannot have two declarations with initializers, that is a redefinition in |
| // both C and C++. However, C++ does have a different definition of what makes |
| // a declaration a definition. |
| extern const int a; |
| const int a = 12; // Okay in C and C++ |
