xref: /llvm-project/clang/test/Sema/private-extern.c (revision 1d51bb824f25140a5b1aa783f6860ac3e7f7d16d)
1 // RUN: %clang_cc1 -verify -fsyntax-only -Wno-private-extern %s
2 // RUN: %clang_cc1 -verify -fsyntax-only -Wno-private-extern -fmodules %s
3 
4 static int g0; // expected-note{{previous definition}}
5 int g0; // expected-error{{non-static declaration of 'g0' follows static declaration}}
6 
7 static int g1;
8 extern int g1;
9 
10 static int g2;
11 __private_extern__ int g2;
12 
13 int g3; // expected-note{{previous definition}}
14 static int g3; // expected-error{{static declaration of 'g3' follows non-static declaration}}
15 
16 extern int g4; // expected-note{{previous declaration}}
17 static int g4; // expected-error{{static declaration of 'g4' follows non-static declaration}}
18 
19 __private_extern__ int g5; // expected-note{{previous declaration}}
20 static int g5; // expected-error{{static declaration of 'g5' follows non-static declaration}}
21 
f0(void)22 void f0(void) {
23   int g6; // expected-note {{previous}}
24   extern int g6; // expected-error {{extern declaration of 'g6' follows non-extern declaration}}
25 }
26 
f1(void)27 void f1(void) {
28   int g7; // expected-note {{previous}}
29   __private_extern__ int g7; // expected-error {{extern declaration of 'g7' follows non-extern declaration}}
30 }
31 
f2(void)32 void f2(void) {
33   extern int g8; // expected-note{{previous declaration}}
34   int g8; // expected-error {{non-extern declaration of 'g8' follows extern declaration}}
35 }
36 
f3(void)37 void f3(void) {
38   __private_extern__ int g9; // expected-note{{previous declaration}}
39   int g9; // expected-error {{non-extern declaration of 'g9' follows extern declaration}}
40 }
41 
f4(void)42 void f4(void) {
43   extern int g10;
44   extern int g10;
45 }
46 
f5(void)47 void f5(void) {
48   __private_extern__ int g11;
49   __private_extern__ int g11;
50 }
51 
f6(void)52 void f6(void) {
53   // FIXME: Diagnose
54   extern int g12;
55   __private_extern__ int g12;
56 }
57 
f7(void)58 void f7(void) {
59   // FIXME: Diagnose
60   __private_extern__ int g13;
61   extern int g13;
62 }
63 
64 struct s0;
f8(void)65 void f8(void) {
66   extern struct s0 g14;
67   __private_extern__ struct s0 g14;
68 }
69 struct s0 { int x; };
70 
f9(void)71 void f9(void) {
72   extern int g15 = 0; // expected-error{{declaration of block scope identifier with linkage cannot have an initializer}}
73   // FIXME: linkage specifier in warning.
74   __private_extern__ int g16 = 0; // expected-error{{declaration of block scope identifier with linkage cannot have an initializer}}
75 }
76 
77 extern int g17;
78 int g17 = 0;
79 
80 extern int g18 = 0; // expected-warning{{'extern' variable has an initializer}}
81 
82 __private_extern__ int g19;
83 int g19 = 0;
84 
85 __private_extern__ int g20 = 0;
86