clang/test/CodeGen/windows-seh-EHa-CppDtors01.cpp

   1 // RUN: %clang_cc1 -triple x86_64-windows -fasync-exceptions -fcxx-exceptions -fexceptions -fms-extensions -x c++ -Wno-implicit-function-declaration -emit-llvm %s -o - | FileCheck %s
   2
   3 // CHECK: invoke void @llvm.seh.scope.begin()
   4 // CHECK: invoke void @llvm.seh.scope.begin()
   5 // CHECK: invoke void @llvm.seh.scope.begin()
   6 // CHECK: invoke void @llvm.seh.scope.end()
   7 // CHECK: invoke void @llvm.seh.scope.end()
   8 // CHECK: invoke void @llvm.seh.scope.end()
   9
  10 // CHECK: invoke void @llvm.seh.try.begin()
  11 // CHECK: %[[src:[0-9-]+]] = load volatile i32, ptr %i
  12 // CHECK-NEXT: invoke void @"?crash@@YAXH@Z"(i32 noundef %[[src]])
  13 // CHECK: invoke void @llvm.seh.try.end()
  14
  15 // ****************************************************************************
  16 // Abstract:     Test CPP unwind Dtoring under SEH -EHa option
  17
  18 void printf(...);
  19 int volatile *NullPtr = 0;
  20 void crash(int i) {
  21   struct A {
  22     ~A() {
  23       printf(" in A dtor \n");
  24     }
  25   } ObjA;
  26   if (i == 0)
  27     *NullPtr = 0;
  28
  29   struct B {
  30     ~B() {
  31       printf(" in B dtor \n");
  32     }
  33   } ObjB;
  34   if (i == 1)
  35     *NullPtr = 0;
  36
  37   struct C {
  38     ~C() {
  39       printf(" in C dtor \n");
  40     }
  41   } ObjC;
  42   if (i == 2)
  43     *NullPtr = 0;
  44 }
  45
  46 #define TRY __try
  47 #define CATCH_ALL __except (1)
  48
  49 int g;
  50 int main() {
  51   for (int i = 0; i < 3; i++) {
  52     TRY {
  53       crash(i);
  54     }
  55     CATCH_ALL {
  56       printf(" Test CPP unwind: in catch handler i = %d \n", i);
  57     }
  58   }
  59   return 0;
  60 }