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// This is an IR generation test because the calculation of visibility
// during IR gen will cause linkage to be implicitly recomputed and
// compared against the earlier cached value. If we had a way of
// testing linkage directly in Sema, that would be better.
// RUN: %clang_cc1 -Werror -Wno-non-c-typedef-for-linkage -triple x86_64-apple-darwin10 -emit-llvm %s -o - | FileCheck %s
// CHECK: @_ZZN5test61A3fooEvE3bar = linkonce_odr global i32 0, align 4
// PR8926
namespace test0 {
typedef struct {
void *foo() { return 0; }
} A;
// CHECK: define linkonce_odr noundef ptr @_ZN5test01A3fooEv(
void test(A *a) {
a->foo();
}
}
namespace test1 {
typedef struct {
template <unsigned n> void *foo() { return 0; }
void foo() {
foo<0>();
}
} A;
// CHECK: define linkonce_odr void @_ZN5test11A3fooEv(
// another at the end
void test(A *a) {
a->foo();
}
}
namespace test2 {
typedef struct {
template <unsigned n> struct B {
void *foo() { return 0; }
};
void foo(B<0> *b) {
b->foo();
}
} A;
// CHECK: define linkonce_odr void @_ZN5test21A3fooEPNS0_1BILj0EEE(
void test(A *a) {
a->foo(0);
}
}
namespace test3 {
namespace { struct A {}; }
// CHECK: define internal void @_ZN5test34testENS_12_GLOBAL__N_11AE(
void test(A a) {}
void force() { test(A()); }
// CHECK: define{{.*}} void @test3(
extern "C" void test3(A a) {}
}
namespace {
// CHECK: define{{.*}} void @test4(
extern "C" void test4(void) {}
}
// PR9316: Ensure that even non-namespace-scope function declarations in
// a C declaration context respect that over the anonymous namespace.
extern "C" {
namespace {
struct X {
int f() {
extern int g();
extern int a;
// Test both for mangling in the code generation and warnings from use
// of internal, undefined names via -Werror.
// CHECK: call i32 @g(
// CHECK: load i32, ptr @a,
return g() + a;
}
};
}
// Force the above function to be emitted by codegen.
int test(X& x) {
return x.f();
}
}
// CHECK: define linkonce_odr noundef ptr @_ZN5test11A3fooILj0EEEPvv(
// CHECK: define linkonce_odr noundef ptr @_ZN5test21A1BILj0EE3fooEv(
namespace test5 {
struct foo {
};
extern "C" {
const foo bar[] = {
};
}
}
// Test that we don't compute linkage too hastily before we're done
// processing a record decl.
namespace test6 {
typedef struct {
int foo() {
// Tested at top of file.
static int bar = 0;
return bar++;
}
} A;
void test() {
A a;
a.foo();
}
}
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