clang/test/CodeGenCXX/eh-aggregated-inits-unwind.cpp

   1 // Check that destructors of memcpy-able struct members are called properly
   2 // during stack unwinding after an exception.
   3 //
   4 // Check that destructor's argument (address of member to be destroyed) is
   5 // obtained by taking offset from struct, not by bitcasting pointers.
   6 //
   7 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -O0 -fno-elide-constructors -emit-llvm %s -o - | FileCheck %s
   8
   9 struct ImplicitCopy {
  10   int id;
  11   ImplicitCopy() { id = 10; }
  12   ~ImplicitCopy() { id = 20; }
  13 };
  14
  15 struct ThrowCopy {
  16   int id;
  17   ThrowCopy() { id = 15; }
  18   ThrowCopy(const ThrowCopy &x) {
  19     id = 25;
  20     throw 1;
  21   }
  22   ~ThrowCopy() { id = 35; }
  23 };
  24
  25 struct Container {
  26   int id;
  27   ImplicitCopy o1;
  28   ThrowCopy o2;
  29
  30   Container() { id = 1000; }
  31   ~Container() { id = 2000; }
  32 };
  33
  34 int main() {
  35   try {
  36     Container c1;
  37     // CHECK-LABEL: main
  38     // CHECK: %{{.+}} = getelementptr inbounds %struct.Container, ptr %{{.+}}, i32 0, i32 1
  39     Container c2(c1);
  40
  41     return 2;
  42   } catch (...) {
  43     return 1;
  44   }
  45   return 0;
  46 }