Teach CFGBuilder that the 'default' branch of a switch statement is dead if all enum values in a switch conditioned are handled.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127727 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaCXX/array-bounds.cpp b/test/SemaCXX/array-bounds.cpp
index 62b4d52..3bd6c35 100644
--- a/test/SemaCXX/array-bounds.cpp
+++ b/test/SemaCXX/array-bounds.cpp
@@ -160,3 +160,16 @@
}
}
+// Test that if all the values of an enum covered, that the 'default' branch
+// is unreachable.
+enum Values { A, B, C, D };
+void test_all_enums_covered(enum Values v) {
+ int x[2];
+ switch (v) {
+ case A: return;
+ case B: return;
+ case C: return;
+ case D: return;
+ }
+ x[2] = 0; // no-warning
+}