1 // RUN: %clang_cc1 -verify -fsyntax-only -triple x86_64-linux-gnu %s
2 
3 int x __attribute__((section(
4    42)));  // expected-error {{'section' attribute requires a string}}
5 
6 
7 // PR6007
8 void test() {
9   __attribute__((section("NEAR,x"))) int n1; // expected-error {{'section' attribute only applies to functions, global variables, Objective-C methods, and Objective-C properties}}
10   __attribute__((section("NEAR,x"))) static int n2; // ok.
11 }
12 
13 // pr9356
14 void __attribute__((section("foo"))) test2(); // expected-note {{previous attribute is here}}
15 void __attribute__((section("bar"))) test2() {} // expected-warning {{section does not match previous declaration}}
16 
17 enum __attribute__((section("NEAR,x"))) e { one }; // expected-error {{'section' attribute only applies to}}
18 
19 extern int a; // expected-note {{previous declaration is here}}
20 int *b = &a;
21 extern int a __attribute__((section("foo,zed"))); // expected-warning {{section attribute is specified on redeclared variable}}
22 
23 // Not a warning.
24 extern int c;
25 int c __attribute__((section("foo,zed")));
26 
27 // Also OK.
28 struct r_debug {};
29 extern struct r_debug _r_debug;
30 struct r_debug _r_debug __attribute__((nocommon, section(".r_debug,bar")));
31 
32 namespace override {
33   struct A {
34     __attribute__((section("foo"))) virtual void f(){};
35   };
36   struct B : A {
37     void f() {} // ok
38   };
39   struct C : A {
40     __attribute__((section("bar"))) void f(); // expected-note {{previous}}
41   };
42   __attribute__((section("baz"))) // expected-warning {{section does not match}}
43   void C::f() {}
44 }
45 
46 // Check for section type conflicts between global variables and function templates
47 template <typename> __attribute__((section("template_fn1"))) void template_fn1() {} // expected-note {{declared here}}
48 const int const_global_var __attribute__((section("template_fn1"))) = 42;           // expected-error {{'const_global_var' causes a section type conflict with 'template_fn1'}}
49 int mut_global_var __attribute__((section("template_fn2"))) = 42;                   // expected-note {{declared here}}
50 template <typename> __attribute__((section("template_fn2"))) void template_fn2() {} // expected-error {{'template_fn2' causes a section type conflict with 'mut_global_var'}}
51