Fix a crash with -Wassign-enum, where we didn't adjust the APInt type of the
constant. Also fix some spelling mistakes and formatting issues.

Reviewed by Richard Smith over IRC.

Fixes PR15069.

llvm-svn: 183409
diff --git a/clang/test/Sema/warn-outof-range-assign-enum.c b/clang/test/Sema/warn-outof-range-assign-enum.c
index 2e79e66..43eea0c 100644
--- a/clang/test/Sema/warn-outof-range-assign-enum.c
+++ b/clang/test/Sema/warn-outof-range-assign-enum.c
@@ -21,6 +21,18 @@
   return 10; // expected-warning {{integer constant not in range of enumerated type 'enum Test2'}}
 }
 
+// PR15069
+typedef enum
+{
+  a = 0
+} T;
+
+void f()
+{
+  T x = a;
+  x += 1; // expected-warning {{integer constant not in range of enumerated type}}
+}
+
 int main() {
   CCTestEnum test = 1; // expected-warning {{integer constant not in range of enumerated type 'CCTestEnum'}}
   test = 600; // expected-warning {{integer constant not in range of enumerated type 'CCTestEnum'}}