llvm-project/clang/test/Sema/var-redecl.c

71 lines
2.8 KiB
C

// RUN: %clang_cc1 -fsyntax-only -verify %s
int outer1; // expected-note{{previous definition is here}}
extern int outer2; // expected-note{{previous declaration is here}}
int outer4;
int outer4; // expected-note{{previous definition is here}}
int outer5;
int outer6(float); // expected-note{{previous definition is here}}
int outer7(float);
void outer_test(void) {
extern float outer1; // expected-error{{redeclaration of 'outer1' with a different type}}
extern float outer2; // expected-error{{redeclaration of 'outer2' with a different type}}
extern float outer3; // expected-note{{previous declaration is here}}
double outer4;
extern int outer5; // expected-note{{previous declaration is here}}
extern int outer6; // expected-error{{redefinition of 'outer6' as different kind of symbol}}
int outer7;
extern int outer8; // expected-note{{previous definition is here}}
extern int outer9;
{
extern int outer9; // expected-note{{previous declaration is here}}
}
}
int outer3; // expected-error{{redefinition of 'outer3' with a different type}}
float outer4; // expected-error{{redefinition of 'outer4' with a different type}}
float outer5; // expected-error{{redefinition of 'outer5' with a different type}}
int outer8(int); // expected-error{{redefinition of 'outer8' as different kind of symbol}}
float outer9; // expected-error{{redefinition of 'outer9' with a different type}}
extern int outer13; // expected-note{{previous declaration is here}}
void outer_shadowing_test(void) {
extern int outer10;
extern int outer11; // expected-note{{previous declaration is here}}
extern int outer12; // expected-note{{previous declaration is here}}
{
float outer10;
float outer11;
float outer12;
{
extern int outer10; // okay
extern float outer11; // expected-error{{redeclaration of 'outer11' with a different type}}
static double outer12;
{
extern float outer12; // expected-error{{redeclaration of 'outer12' with a different type}}
extern float outer13; // expected-error{{redeclaration of 'outer13' with a different type}}
}
}
}
}
void g18(void) { // expected-note{{'g18' declared here}}
extern int g19;
}
int *p=&g19; // expected-error{{use of undeclared identifier 'g19'}} \
// expected-warning{{incompatible pointer types}}
// PR3645
static int a;
extern int a; // expected-note {{previous declaration is here}}
int a; // expected-error {{non-static declaration of 'a' follows static declaration}}
void f(int x) { // expected-note {{previous definition is here}}
extern int x; // expected-error {{extern declaration of 'x' follows non-extern declaration}}
}
extern int b[];
void g20(void) { extern int b[3]; } // expected-note{{previous declaration is here}}
void g21(void) { extern int b[4]; } // expected-error{{redeclaration of 'b' with a different type: 'int[4]' vs 'int[3]'}}