Use the C++11 POD definition in C++11 mode to determine whether one

can create a VLA of class type. Fixes <rdar://problem/12151822>.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171783 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 26 insertions, 0 deletions

diff --git a/test/SemaCXX/c99-variable-length-array-cxx11.cpp b/test/SemaCXX/c99-variable-length-array-cxx11.cpp
new file mode 100644
index 0000000000..b740e39775
--- /dev/null
+++ b/test/SemaCXX/c99-variable-length-array-cxx11.cpp
@@ -0,0 +1,26 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 -Wvla %s
+struct StillPOD {
+  StillPOD() = default;
+};
+
+struct StillPOD2 {
+  StillPOD np;
+};
+
+struct NonPOD {
+  NonPOD(int) {}
+};
+
+struct POD {
+  int x;
+  int y;
+};
+
+// We allow VLAs of POD types, only.
+void vla(int N) {
+  int array1[N]; // expected-warning{{variable length arrays are a C99 feature}}
+  POD array2[N]; // expected-warning{{variable length arrays are a C99 feature}}
+  StillPOD array3[N]; // expected-warning{{variable length arrays are a C99 feature}}
+  StillPOD2 array4[N][3]; // expected-warning{{variable length arrays are a C99 feature}}
+  NonPOD array5[N]; // expected-error{{variable length array of non-POD element type 'NonPOD'}}
+}