Fix PR10168: don't warn for unused non-dependent variables in both the template definition and each instantiation.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133580 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaCXX/warn-unused-variables.cpp b/test/SemaCXX/warn-unused-variables.cpp
index 81f22a7..5ba1f2a 100644
--- a/test/SemaCXX/warn-unused-variables.cpp
+++ b/test/SemaCXX/warn-unused-variables.cpp
@@ -54,3 +54,29 @@
static int y = 0; // expected-warning{{unused variable 'y'}}
#pragma unused(x)
}
+
+// PR10168
+namespace PR10168 {
+ // We expect a warning in the definition only for non-dependent variables, and
+ // a warning in the instantiation only for dependent variables.
+ template<typename T>
+ struct S {
+ void f() {
+ int a; // expected-warning {{unused variable 'a'}}
+ T b; // expected-warning 2{{unused variable 'b'}}
+ }
+ };
+
+ template<typename T>
+ void f() {
+ int a; // expected-warning {{unused variable 'a'}}
+ T b; // expected-warning 2{{unused variable 'b'}}
+ }
+
+ void g() {
+ S<int>().f(); // expected-note {{here}}
+ S<char>().f(); // expected-note {{here}}
+ f<int>(); // expected-note {{here}}
+ f<char>(); // expected-note {{here}}
+ }
+}