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// RUN: %clang_cc1 -fsyntax-only -verify %s
namespace test1 {
extern "C" {
void test1_f() {
void test1_g(int); // expected-note {{previous declaration is here}}
}
}
}
int test1_g(int); // expected-error {{functions that differ only in their return type cannot be overloaded}}
namespace test2 {
extern "C" {
void test2_f() {
extern int test2_x; // expected-note {{previous definition is here}}
}
}
}
float test2_x; // expected-error {{redefinition of 'test2_x' with a different type: 'float' vs 'int'}}
namespace test3 {
extern "C" {
void test3_f() {
extern int test3_b; // expected-note {{previous definition is here}}
}
}
extern "C" {
float test3_b; // expected-error {{redefinition of 'test3_b' with a different type: 'float' vs 'int'}}
}
}
extern "C" {
void test4_f() {
extern int test4_b; // expected-note {{previous definition is here}}
}
}
static float test4_b; // expected-error {{redefinition of 'test4_b' with a different type: 'float' vs 'int'}}
extern "C" {
void test5_f() {
extern int test5_b; // expected-note {{previous definition is here}}
}
}
extern "C" {
static float test5_b; // expected-error {{redefinition of 'test5_b' with a different type: 'float' vs 'int'}}
}
extern "C" {
void f() {
extern int test6_b;
}
}
namespace foo {
extern "C" {
static float test6_b;
extern float test6_b;
}
}
namespace linkage {
namespace redecl {
extern "C" {
static void linkage_redecl();
static void linkage_redecl(int);
void linkage_redecl(); // ok, still not extern "C"
void linkage_redecl(int); // ok, still not extern "C"
void linkage_redecl(float); // expected-note {{previous}}
void linkage_redecl(double); // expected-error {{conflicting types}}
}
}
namespace from_outer {
void linkage_from_outer_1();
void linkage_from_outer_2(); // expected-note {{previous}}
extern "C" {
void linkage_from_outer_1(int); // expected-note {{previous}}
void linkage_from_outer_1(); // expected-error {{conflicting types}}
void linkage_from_outer_2(); // expected-error {{different language linkage}}
}
}
namespace mixed {
extern "C" {
void linkage_mixed_1();
static void linkage_mixed_1(int);
static void linkage_mixed_2(int);
void linkage_mixed_2();
}
}
namespace across_scopes {
namespace X {
extern "C" void linkage_across_scopes_f() {
void linkage_across_scopes_g(); // expected-note {{previous}}
}
}
namespace Y {
extern "C" void linkage_across_scopes_g(int); // expected-error {{conflicting}}
}
}
}
void lookup_in_global_f();
namespace lookup_in_global {
void lookup_in_global_f();
extern "C" {
// FIXME: We should reject this.
void lookup_in_global_f(int);
}
}
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