xref: /aosp_15_r20/external/clang/test/CodeGenCXX/c99-variable-length-array.cpp (revision 67e74705e28f6214e480b399dd47ea732279e315) 
1*67e74705SXin Li // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s | FileCheck %s
2*67e74705SXin Li struct X {
3*67e74705SXin Li   X();
4*67e74705SXin Li   ~X();
5*67e74705SXin Li };
6*67e74705SXin Li 
7*67e74705SXin Li struct Y {
8*67e74705SXin Li   Y();
9*67e74705SXin Li   ~Y();
10*67e74705SXin Li };
11*67e74705SXin Li 
12*67e74705SXin Li // CHECK-LABEL: define void @_Z1fiPPKc(
f(int argc,const char * argv[])13*67e74705SXin Li void f(int argc, const char* argv[]) {
14*67e74705SXin Li   // CHECK: call void @_ZN1XC1Ev
15*67e74705SXin Li   X x;
16*67e74705SXin Li   // CHECK: call i8* @llvm.stacksave(
17*67e74705SXin Li   const char *argv2[argc];
18*67e74705SXin Li   // CHECK: call void @_ZN1YC1Ev
19*67e74705SXin Li   Y y;
20*67e74705SXin Li   for (int i = 0; i != argc; ++i)
21*67e74705SXin Li     argv2[i] = argv[i];
22*67e74705SXin Li 
23*67e74705SXin Li   // CHECK: call void @_ZN1YD1Ev
24*67e74705SXin Li   // CHECK: call void @llvm.stackrestore
25*67e74705SXin Li   // CHECK: call void @_ZN1XD1Ev
26*67e74705SXin Li   // CHECK: ret void
27*67e74705SXin Li }
28*67e74705SXin Li 
29*67e74705SXin Li namespace PR11744 {
30*67e74705SXin Li   // Make sure this doesn't crash; there was a use-after-free issue
31*67e74705SXin Li   // for this testcase.
f(int n)32*67e74705SXin Li   template<typename T> int f(int n) {
33*67e74705SXin Li     T arr[3][n];
34*67e74705SXin Li     return 3;
35*67e74705SXin Li   }
36*67e74705SXin Li   int test = f<int>(0);
37*67e74705SXin Li }
38