1 // RUN: %clang_cc1 -fsyntax-only -verify %s -DTEST1
2 // RUN: %clang_cc1 -fsyntax-only -verify %s -DTEST2
3 // RUN: %clang_cc1 -fsyntax-only -verify %s -DTEST3
4 // RUN: %clang_cc1 -fsyntax-only -verify %s -DTEST4
5 // RUN: %clang_cc1 -fsyntax-only -verify %s -DTEST5
6 // RUN: %clang_cc1 -fsyntax-only -verify %s -DTEST6
7 // RUN: %clang_cc1 -fsyntax-only -verify %s -DTEST7
8 // RUN: %clang_cc1 -fsyntax-only -verify %s -DTEST8
9 // RUN: %clang_cc1 -fsyntax-only -verify %s -DTEST9 -ffreestanding
10
11 #if TEST1
12 int main; // expected-warning{{variable named 'main' with external linkage has undefined behavior}}
13
14 #elif TEST2
15 extern int main; // expected-warning{{variable named 'main' with external linkage has undefined behavior}}
16
17 #elif TEST3
18 // expected-no-diagnostics
x()19 void x() {
20 static int main;
21 }
22
23 #elif TEST4
x()24 void x() {
25 extern int main; // expected-warning{{variable named 'main' with external linkage has undefined behavior}}
26 }
27
28 #elif TEST5
29 // expected-no-diagnostics
x()30 void x() {
31 int main;
32 }
33
34 #elif TEST6
35 // expected-no-diagnostics
36 static int main;
37
38 #elif TEST7
39 // expected-no-diagnostics
x()40 void x() {
41 auto int main;
42 }
43
44 #elif TEST8
45 // expected-no-diagnostics
x()46 void x() {
47 register int main;
48 }
49
50 #elif TEST9
51 // expected-no-diagnostics
52 int main;
53
54 #else
55 #error Unknown Test
56 #endif
57