1 // RUN: %clang_cc1 -fsyntax-only -verify %s 2 3 // C++ [basic.def.odr]p1: 4 // No translation unit shall contain more than one definition of any 5 // variable, [...]. 6 7 // Bad: in C++, these are both definitions. None of that C99 tentative stuff. 8 int i; // expected-note {{previous}} 9 int i; // expected-error {{redefinition}} 10 11 // OK: decl + def 12 extern int j; 13 int j; 14 15 // OK: def + decl 16 int k; 17 extern int k; 18 19 // Bad. The important thing here is that we don't emit the diagnostic twice. 20 int l = 1; // expected-note {{previous}} 21 int l = 2; // expected-error {{redefinition}} 22
