var-redecl.c revision ef8225444452a1486bd721f3285301fe84643b00 
1// RUN: %clang_cc1 -fsyntax-only -verify %s
2
3int outer1; // expected-note{{previous definition is here}}
4extern int outer2; // expected-note{{previous definition is here}}
5int outer4;
6int outer4; // expected-note{{previous definition is here}}
7int outer5; // expected-note{{previous definition is here}}
8int outer6(float); // expected-note{{previous definition is here}}
9int outer7(float);
10
11void outer_test() {
12  extern float outer1; // expected-error{{redefinition of 'outer1' with a different type}}
13  extern float outer2; // expected-error{{redefinition of 'outer2' with a different type}}
14  extern float outer3; // expected-note{{previous definition is here}}
15  double outer4;
16  extern int outer5;
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 definition 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 definition is here}}
33void outer_shadowing_test() {
34  extern int outer10;
35  extern int outer11; // expected-note{{previous definition is here}}
36  extern int outer12; // expected-note{{previous definition is here}}
37  {
38    float outer10;
39    float outer11;
40    float outer12;
41    {
42      extern int outer10; // okay
43      extern float outer11; // expected-error{{redefinition of 'outer11' with a different type}}
44      static double outer12;
45      {
46        extern float outer12; // expected-error{{redefinition of 'outer12' with a different type}}
47        extern float outer13; // expected-error{{redefinition 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-warning{{incompatible pointer types}}
58
59// PR3645
60static int a;
61extern int a; // expected-note {{previous declaration is here}}
62int a;	// expected-error {{non-static declaration of 'a' follows static declaration}}
63