Compiler version and platform:
Intel(R) C Intel(R) 64 Compiler for applications running on Intel(R) 64, Version 17.0.0.098 Build 20160721
According to the C++ standard, it is illegal to have a declaration that shadows a template parameter.
$ icc -c small.cpp
$
$ g++-6.2 -c small.cpp
small.cpp:3:7: error: declaration of ‘int A<T>::T’ shadows template parameter
int T;
^
small.cpp:1:12: note: template parameter ‘T’ declared here
template < int T > struct A
^~~
$ clang++-3.8 -c small.cpp
small.cpp:3:7: error: declaration of 'T' shadows template parameter
int T;
^
small.cpp:1:16: note: template parameter is declared here
template < int T > struct A
^
1 error generated.
$
$ cat small.cpp
template < int T > struct A
{
int T;
};
$