71 lines · c
1// RUN: %clang_cc1 -fsyntax-only -verify %s2 3int outer1; // expected-note{{previous definition is here}}4extern int outer2; // expected-note{{previous declaration is here}}5int outer4;6int outer4; // expected-note{{previous definition is here}}7int outer5;8int outer6(float); // expected-note{{previous definition is here}}9int outer7(float);10 11void outer_test(void) {12 extern float outer1; // expected-error{{redeclaration of 'outer1' with a different type}}13 extern float outer2; // expected-error{{redeclaration of 'outer2' with a different type}}14 extern float outer3; // expected-note{{previous declaration is here}}15 double outer4;16 extern int outer5; // expected-note{{previous declaration is here}}17 extern int outer6; // expected-error{{redefinition of 'outer6' as different kind of symbol}}18 int outer7;19 extern int outer8; // expected-note{{previous definition is here}}20 extern int outer9;21 {22 extern int outer9; // expected-note{{previous declaration is here}}23 }24}25 26int outer3; // expected-error{{redefinition of 'outer3' with a different type}}27float outer4; // expected-error{{redefinition of 'outer4' with a different type}}28float outer5; // expected-error{{redefinition of 'outer5' with a different type}}29int outer8(int); // expected-error{{redefinition of 'outer8' as different kind of symbol}}30float outer9; // expected-error{{redefinition of 'outer9' with a different type}}31 32extern int outer13; // expected-note{{previous declaration is here}}33void outer_shadowing_test(void) {34 extern int outer10;35 extern int outer11; // expected-note{{previous declaration is here}}36 extern int outer12; // expected-note{{previous declaration is here}}37 {38 float outer10;39 float outer11;40 float outer12;41 {42 extern int outer10; // okay43 extern float outer11; // expected-error{{redeclaration of 'outer11' with a different type}}44 static double outer12;45 {46 extern float outer12; // expected-error{{redeclaration of 'outer12' with a different type}}47 extern float outer13; // expected-error{{redeclaration of 'outer13' with a different type}}48 }49 }50 }51}52 53void g18(void) { // expected-note{{'g18' declared here}}54 extern int g19;55}56int *p=&g19; // expected-error{{use of undeclared identifier 'g19'}} \57 // expected-error{{incompatible pointer types}}58 59// PR364560static int a;61extern int a; // expected-note {{previous declaration is here}}62int a; // expected-error {{non-static declaration of 'a' follows static declaration}}63 64void f(int x) { // expected-note {{previous definition is here}}65 extern int x; // expected-error {{extern declaration of 'x' follows non-extern declaration}}66}67 68extern int b[];69void g20(void) { extern int b[3]; } // expected-note{{previous declaration is here}}70void g21(void) { extern int b[4]; } // expected-error{{redeclaration of 'b' with a different type: 'int[4]' vs 'int[3]'}}71