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

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// RUN: %clang_cc1 -emit-llvm -o - %s | FileCheck %s
struct X {
X();
~X();
};
struct Y {
Y();
~Y();
};
// CHECK: define void @_Z1fiPPKc(
void f(int argc, const char* argv[]) {
// CHECK: call void @_ZN1XC1Ev
X x;
// CHECK: call i8* @llvm.stacksave(
const char *argv2[argc];
// CHECK: call void @_ZN1YC1Ev
Y y;
for (int i = 0; i != argc; ++i)
argv2[i] = argv[i];
// CHECK: call void @_ZN1YD1Ev
// CHECK: call void @llvm.stackrestore
// CHECK: call void @_ZN1XD1Ev
// CHECK: ret void
}