Add -Wswitch-enum-redundant-default.
This warning acts as the complement to the main -Wswitch-enum warning (which
warns whenever a switch over enum without a default doesn't cover all values of
the enum) & has been an an-doc coding convention in LLVM and Clang in my
experience. The purpose is to ensure there's never a "dead" default in a
switch-over-enum because this would hide future -Wswitch-enum errors.
The name warning has a separate flag name so it can be disabled but it's grouped
under -Wswitch-enum & is on-by-default because of this.
The existing violations of this rule in test cases have had the warning disabled
& I've added a specific test for the new behavior (many negative cases already
exist in the same test file - and none regressed - so I didn't add more).
Reviewed by Ted Kremenek ( http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-20120116/051690.html )
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148640 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaCXX/gnu-case-ranges.cpp b/test/SemaCXX/gnu-case-ranges.cpp
index c1c18a8..94100d2 100644
--- a/test/SemaCXX/gnu-case-ranges.cpp
+++ b/test/SemaCXX/gnu-case-ranges.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -verify %s
+// RUN: %clang_cc1 -verify -Wno-switch-enum-redundant-default %s
enum E {
one,