Implement support for variable length arrays in C++. VLAs are limited
in several important ways:
- VLAs of non-POD types are not permitted.
- VLAs cannot be used in conjunction with C++ templates.
These restrictions are intended to keep VLAs out of the parts of the
C++ type system where they cause the most trouble. Fixes PR5678 and
<rdar://problem/8013618>.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@104443 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGenCXX/c99-variable-length-array.cpp b/test/CodeGenCXX/c99-variable-length-array.cpp
new file mode 100644
index 0000000..66c14ff
--- /dev/null
+++ b/test/CodeGenCXX/c99-variable-length-array.cpp
@@ -0,0 +1,27 @@
+// 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
+}