Teach Sema::isDeclInScope to handle overload sets constructed from
functions that occur in multiple declaration contexts, e.g., because
some were found via using declarations. Now, isDeclInScope will build
a new overload set (when needed) containing only those declarations
that are actually in scope. This eliminates a problem found with
libstdc++'s <iostream>, where the presence of using
In the longer term, I'd like to eliminate Sema::isDeclInScope in favor
of better handling of the RedeclarationOnly flag in the name-lookup
routines. That way, name lookup only returns the entities that matter,
rather than taking the current two-pass approach of producing too many
results and then filtering our the wrong results. It's not efficient,
and I'm sure that we aren't filtering everywhere we should be.
llvm-svn: 82954
diff --git a/clang/test/SemaCXX/using-decl-1.cpp b/clang/test/SemaCXX/using-decl-1.cpp
index 2459f25..37e101e 100644
--- a/clang/test/SemaCXX/using-decl-1.cpp
+++ b/clang/test/SemaCXX/using-decl-1.cpp
@@ -6,3 +6,14 @@
using ::f;
inline void f() { return f(true); }
}
+
+namespace M {
+ void f(float);
+}
+
+namespace N {
+ using M::f;
+ void f(int) { } // expected-note{{previous}}
+
+ void f(int) { } // expected-error{{redefinition}}
+}