clang/test/CodeGenCXX/c99-variable-length-array.cpp

   1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s | FileCheck %s
   2 struct X {
   3   X();
   4   ~X();
   5 };
   6
   7 struct Y {
   8   Y();
   9   ~Y();
  10 };
  11
  12 // CHECK-LABEL: define{{.*}} void @_Z1fiPPKc(
  13 void f(int argc, const char* argv[]) {
  14   // CHECK: call void @_ZN1XC1Ev
  15   X x;
  16   // CHECK: call ptr @llvm.stacksave.p0(
  17   const char *argv2[argc];
  18   // CHECK: call void @_ZN1YC1Ev
  19   Y y;
  20   for (int i = 0; i != argc; ++i)
  21     argv2[i] = argv[i];
  22
  23   // CHECK: call void @_ZN1YD1Ev
  24   // CHECK: call void @llvm.stackrestore.p0
  25   // CHECK: call void @_ZN1XD1Ev
  26   // CHECK: ret void
  27 }
  28
  29 namespace PR11744 {
  30   // Make sure this doesn't crash; there was a use-after-free issue
  31   // for this testcase.
  32   template<typename T> int f(int n) {
  33     T arr[3][n];
  34     return 3;
  35   }
  36   int test = f<int>(0);
  37 }