Fix for PR30639: CGDebugInfo Null dereference with OpenMP array
access, by Erich Keane

OpenMP creates a variable array type with a a null size-expr. The Debug
generation failed to due to this. This patch corrects the openmp
implementation, updates the tests, and adds a new one for this
condition.

Differential Revision: https://reviews.llvm.org/D25373

llvm-svn: 284110
diff --git a/clang/test/OpenMP/target_map_codegen.cpp b/clang/test/OpenMP/target_map_codegen.cpp
index 000ce71..92ed0ab 100644
--- a/clang/test/OpenMP/target_map_codegen.cpp
+++ b/clang/test/OpenMP/target_map_codegen.cpp
@@ -675,7 +675,7 @@
   }
 }
 
-// CK13: define internal void [[KERNEL]](i[[sz]] [[VLA0:%.+]], i[[sz]] [[VLA1:%.+]], double* {{.+}}[[ARG:%.+]])
+// CK13: define internal void [[KERNEL]](i[[sz]] [[VLA0:%.+]], i[[sz]] [[VLA1:%.+]], double* {{.*}}[[ARG:%.+]])
 // CK13: [[ADDR0:%.+]] = alloca i[[sz]],
 // CK13: [[ADDR1:%.+]] = alloca i[[sz]],
 // CK13: [[ADDR2:%.+]] = alloca double*,