72 lines
1.3 KiB
C++
72 lines
1.3 KiB
C++
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// RUN: %clang_cc1 -std=c++11 -triple x86_64-apple-darwin10 -I%S -emit-llvm -o - %s | FileCheck %s
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#include <typeinfo>
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// CHECK: @_ZTIDn = external constant i8*
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int* a = nullptr;
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void f() {
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int* a = nullptr;
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}
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typedef decltype(nullptr) nullptr_t;
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nullptr_t get_nullptr();
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struct X { };
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void g() {
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// CHECK: call i8* @_Z11get_nullptrv()
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int (X::*pmf)(int) = get_nullptr();
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}
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const std::type_info& f2() {
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return typeid(nullptr_t);
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}
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union U {
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int n;
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nullptr_t b;
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};
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// CHECK-LABEL: define {{.*}}pr23833_a
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// CHECK: store
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// CHECK: load
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// CHECK-NOT: load
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// CHECK: ret i1 false
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bool pr23833_a(U &u) { return bool(u.b); }
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// CHECK-LABEL: define {{.*}}pr23833_b
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// CHECK: store
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// CHECK: load
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// CHECK-NOT: load
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// CHECK: ret i8* null
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nullptr_t pr23833_b(nullptr_t &n) { return n; }
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struct X1 { operator int*(); };
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struct X2 { operator const nullptr_t&(); };
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// CHECK-LABEL: define {{.*}}pr23833_c
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// CHECK: call {{.*}}X1
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// CHECK: call {{.*}}X2
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// CHECK-NOT: load
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// CHECK: ret i32
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int pr23833_c() {
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return X1() != X2();
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}
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// CHECK-LABEL: define {{.*}}pr23833_d
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// CHECK: call {{.*}}X2
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// CHECK-NOT: load
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// CHECK: store
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// CHECK: load
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// CHECK: ret i32*
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int *pr23833_d() {
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int *p = X2();
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return p;
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}
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namespace PR39528 {
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constexpr nullptr_t null = nullptr;
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void f(nullptr_t);
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void g() { f(null); }
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}
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