clang/test/CodeGen/temporary-lifetime-exceptions.cpp

   1 // RUN: %clang_cc1 %s -fexceptions -fcxx-exceptions -std=c++11 -O1 -triple x86_64 -emit-llvm -o - | FileCheck %s
   2
   3 // lifetime.end should be invoked even if the destructor doesn't run due to an
   4 // exception thrown from previous ctor call.
   5
   6 struct A { A(); ~A(); };
   7 A Baz(const A&);
   8
   9 void Test1() {
  10   // CHECK-LABEL: @_Z5Test1v(
  11   // CHECK: call void @llvm.lifetime.start.p0(i64 1, ptr nonnull [[TMP:[^ ]+]])
  12   // CHECK: call void @llvm.lifetime.start.p0(i64 1, ptr nonnull [[TMP1:[^ ]+]])
  13
  14   // Normal exit
  15   // CHECK: call void @llvm.lifetime.end.p0(i64 1, ptr nonnull [[TMP1]])
  16   // CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 1, ptr nonnull [[TMP]])
  17
  18   // Exception exit
  19   // CHECK: call void @llvm.lifetime.end.p0(i64 1, ptr nonnull [[TMP1]])
  20   // CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 1, ptr nonnull [[TMP]])
  21   Baz(Baz(A()));
  22 }