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1 // RUN: %clang_cc1 -triple x86_64-pc-linux  -fsyntax-only -verify -emit-llvm-only %s
2 
3 void f1(void) __attribute__((alias("g1")));
g1(void)4 void g1(void) {
5 }
6 
7 void f2(void) __attribute__((alias("g2"))); // expected-error {{alias must point to a defined variable or function}}
8 
9 
10 void f3(void) __attribute__((alias("g3"))); // expected-error {{alias must point to a defined variable or function}}
11 void g3(void);
12 
13 
14 void f4() __attribute__((alias("g4")));
g4()15 void g4() {}
16 void h4() __attribute__((alias("f4")));
17 
18 void f5() __attribute__((alias("g5")));
19 void h5() __attribute__((alias("f5")));
g5()20 void g5() {}
21 
g6()22 void g6() {}
23 void f6() __attribute__((alias("g6")));
24 void h6() __attribute__((alias("f6")));
25 
g7()26 void g7() {}
27 void h7() __attribute__((alias("f7")));
28 void f7() __attribute__((alias("g7")));
29 
30 void h8() __attribute__((alias("f8")));
g8()31 void g8() {}
32 void f8() __attribute__((alias("g8")));
33 
34 void h9() __attribute__((alias("f9")));
35 void f9() __attribute__((alias("g9")));
g9()36 void g9() {}
37 
38 void f10() __attribute__((alias("g10"))); // expected-error {{alias definition is part of a cycle}}
39 void g10() __attribute__((alias("f10"))); // expected-error {{alias definition is part of a cycle}}
40 
41 // FIXME: This could be a bit better, h10 is not part of the cycle, it points
42 // to it.
43 void h10() __attribute__((alias("g10"))); // expected-error {{alias definition is part of a cycle}}
44 
45 extern int a1 __attribute__((alias("b1")));
46 int b1 = 42;
47 
48 extern int a2 __attribute__((alias("b2"))); // expected-error {{alias must point to a defined variable or function}}
49 
50 extern int a3 __attribute__((alias("b3"))); // expected-error {{alias must point to a defined variable or function}}
51 extern int b3;
52 
53 extern int a4 __attribute__((alias("b4"))); // expected-error {{alias must point to a defined variable or function}}
54 typedef int b4;
55 
test2_bar()56 void test2_bar() {}
57 void test2_foo() __attribute__((weak, alias("test2_bar")));
58 void test2_zed() __attribute__((alias("test2_foo"))); // expected-warning {{alias will always resolve to test2_bar even if weak definition of test2_foo is overridden}}
59 
test3_bar()60 void test3_bar() { }
61 void test3_foo() __attribute__((section("test"))); // expected-warning {{alias will not be in section 'test' but in the same section as the aliasee}}
62 void test3_foo() __attribute__((alias("test3_bar")));
63 
test4_bar()64 __attribute__((section("test"))) void test4_bar() { }
65 void test4_foo() __attribute__((section("test")));
66 void test4_foo() __attribute__((alias("test4_bar")));
67 
68 int test5_bar = 0;
69 extern struct incomplete_type test5_foo __attribute__((alias("test5_bar")));
70