Diagnose unused exception parameters under a different warning group
(-Wunused-exception-parameter) than normal variables, since it's more
common to name and then ignore an exception parameter. This warning is
neither enabled by default nor by -Wall. Fixes <rdar://problem/7931045>.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102931 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaObjC/warn-unused-exception-param.m b/test/SemaObjC/warn-unused-exception-param.m
new file mode 100644
index 0000000..f649f8c
--- /dev/null
+++ b/test/SemaObjC/warn-unused-exception-param.m
@@ -0,0 +1,4 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -Wunused-exception-parameter %s
+void f0() {
+ @try {} @catch(id a) {} // expected-warning{{unused exception parameter 'a'}}
+}