Improve the diagnostic and recovery for missing colons after 'case'

and 'default' statements, including a Fix-It to add the colon:

test/Parser/switch-recovery.cpp:13:12: error: expected ':' after 'case'
    case 17 // expected-error{{expected ':' after 'case'}}
           ^
           :
test/Parser/switch-recovery.cpp:16:12: error: expected ':' after 'default'
    default // expected-error{{expected ':' after 'default'}}
           ^
           :

llvm-svn: 122522

1 files changed, 9 insertions, 1 deletions

diff --git a/clang/test/Parser/switch-recovery.cpp b/clang/test/Parser/switch-recovery.cpp
index 8eb4cff4fbe..7b6323a405c 100644
--- a/clang/test/Parser/switch-recovery.cpp
+++ b/clang/test/Parser/switch-recovery.cpp
@@ -3,10 +3,18 @@
 // <rdar://problem/7971948>
 struct A {};
 struct B {
-  void foo() {
+  void foo(int b) {
     switch (a) { // expected-error{{use of undeclared identifier 'a'}}
     default:
       return;
     }
+    
+    switch (b) {
+    case 17 // expected-error{{expected ':' after 'case'}}
+      break;
+
+    default // expected-error{{expected ':' after 'default'}}
+      return;
+    }
   }
 };