Add support for initializing char arrays from string literals.

Adapted from a patch by Anders Carlsson.

llvm-svn: 44816
diff --git a/clang/test/Sema/array-constraint.c b/clang/test/Sema/array-constraint.c
index ab2c969..f281df1 100644
--- a/clang/test/Sema/array-constraint.c
+++ b/clang/test/Sema/array-constraint.c
@@ -45,7 +45,7 @@
 void strFunc(char *);
 const char staticAry[] = "test";
 int checkStaticAry() { 
-  strFunc(staticAry); // expected-warning{{passing 'char const []' to 'char *' discards qualifiers}}
+  strFunc(staticAry); // expected-warning{{passing 'char const [5]' to 'char *' discards qualifiers}}
 }