https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57709
Gael Guennebaud <gael.guennebaud at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |gael.guennebaud at gmail dot com --- Comment #15 from Gael Guennebaud <gael.guennebaud at gmail dot com> --- -Wshadow still trigger false positive when a base member functions is imported with the "using" keyword, as in the following example (tested with gcc 5.1): template<typename T> struct BaseClass { BaseClass(int size) : m_size(size) {} int size() { return m_size; } int m_size; }; template<typename T> struct Foo : BaseClass<T> { typedef BaseClass<T> Base; Foo(int size) : Base(size) {} using Base::size; }; $ g++-mp-5 gcc_shadow.cpp -c -Wshadow gcc_shadow.cpp: In constructor 'Foo<T>::Foo(int)': gcc_shadow.cpp:9:17: warning: declaration of 'size' shadows a member of 'Foo<T>' [-Wshadow] Foo(int size) : Base(size) {} ^ gcc_shadow.cpp:10:15: note: shadowed declaration is here using Base::size; Note that clang does not warn in this case, so it should be possible to figure out that in this case, the imported "size" symbol is a function and not a variable.