PR19305: Don't issue -Wunused-variable warnings on variable templates. It's not
meaningful to odr-use the VarDecl inside a variable template. (Separately, it'd
be nice to track referenced-ness for templates, and warn on unused ones, but
that's really a distinct issue...)
Move a test that generates and tests a warning-suppressing error out to its own
test file, so it doesn't have weird effects on the other tests in the same file.
llvm-svn: 205448
diff --git a/clang/test/SemaCXX/warn-unused-label-error.cpp b/clang/test/SemaCXX/warn-unused-label-error.cpp
new file mode 100644
index 0000000..66b616f
--- /dev/null
+++ b/clang/test/SemaCXX/warn-unused-label-error.cpp
@@ -0,0 +1,26 @@
+// RUN: %clang_cc1 -fsyntax-only -Wunused-variable -Wunused-label -verify %s
+
+static int unused_local_static;
+
+namespace PR8455 {
+ void f() {
+ A: // expected-warning {{unused label 'A'}}
+ __attribute__((unused)) int i; // attribute applies to variable
+ B: // attribute applies to label
+ __attribute__((unused)); int j; // expected-warning {{unused variable 'j'}}
+ }
+
+ void g() {
+ C: // unused label 'C' will not appear here because an error has occurred
+ __attribute__((unused))
+ #pragma weak unused_local_static // expected-error {{expected ';' after __attribute__}}
+ ;
+ }
+
+ void h() {
+ D: // expected-warning {{unused label 'D'}}
+ #pragma weak unused_local_static
+ __attribute__((unused)) // expected-warning {{declaration does not declare anything}}
+ ;
+ }
+}