clang/test/CodeGen/windows-seh-EHa-CppCatchDotDotDot.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: define dso_local void @"?crash@@YAXH@Z
   4 // CHECK: invoke void @llvm.seh.try.begin()
   5 // CHECK: invoke void @llvm.seh.scope.begin()
   6 // CHECK: invoke void @llvm.seh.scope.end()
   7
   8 // CHECK: %[[dst:[0-9-]+]] = catchswitch within none [label %catch] unwind to caller
   9 // CHECK: %[[dst1:[0-9-]+]] = catchpad within %[[dst]] [ptr null, i32 0, ptr null]
  10 // CHECK: "funclet"(token %[[dst1]])
  11
  12 // CHECK: define dso_local void @"?bar@@YAXXZ
  13 // CHECK: invoke void @llvm.seh.try.begin()
  14 // CHECK: invoke void @_CxxThrowException
  15 // CHECK: %[[dst:[0-9-]+]] = catchpad within %0 [ptr null, i32 0, ptr null]
  16 // CHECK: invoke void @llvm.seh.try.begin() [ "funclet"(token %[[dst]]) ]
  17
  18 // CHECK: invoke void @llvm.seh.try.begin()
  19 // CHECK: %[[src:[0-9-]+]] = load volatile i32, ptr %i
  20 // CHECK-NEXT: invoke void @"?crash@@YAXH@Z"(i32 noundef %[[src]])
  21 // CHECK: invoke void @llvm.seh.try.end()
  22
  23 // CHECK: invoke void @llvm.seh.try.begin()
  24 // CHECK: invoke void @"?bar@@YAXXZ"()
  25 // CHECK: invoke void @llvm.seh.try.end()
  26
  27 // *****************************************************************************
  28 // Abstract:     Test CPP catch(...) under SEH -EHa option
  29
  30 void printf(...);
  31 int volatile *NullPtr = 0;
  32 void foo() {
  33   *NullPtr = 0;
  34 }
  35 int *pt1, *pt2, *pt3;
  36 int g;
  37 void crash(int i) {
  38   g = i;
  39   try {
  40     struct A {
  41       A() {
  42         printf(" in A ctor \n");
  43         if (g == 0)
  44           *NullPtr = 0;
  45       }
  46       ~A() {
  47         printf(" in A dtor \n");
  48       }
  49     } ObjA;
  50     if (i == 1)
  51       *NullPtr = 0;
  52   } catch (...) {
  53     printf(" in catch(...) funclet \n");
  54     if (i == 1)
  55       throw(i);
  56   }
  57 }
  58
  59 void bar() {
  60   try {
  61     throw 1;
  62   } catch(...) {
  63     try {
  64       *NullPtr = 0;
  65     } catch (...) {
  66        throw 1;
  67     }
  68   }
  69 }
  70
  71 int main() {
  72   for (int i = 0; i < 2; i++) {
  73     __try {
  74       crash(i);
  75     } __except (1) {
  76       printf(" Test CPP unwind: in except handler i = %d \n", i);
  77     }
  78   }
  79   __try {
  80    bar();
  81   } __except (1) {
  82     printf("Test CPP unwind: in except handler \n");
  83   }
  84   return 0;
  85 }