Ferenc Kovács <derefer@xxxxxxxxx> writes: > When I compile a header with g++ trunk on x86_64 using -Wshadow containing > function declarations like this: > > int g(int a, int (*b)(int a)); > > /* Originally, I found it in openssl's bn.h BN_BLINDING_create_param() and I > got a bunch of warnings from all .cc files including this header. */ > > I get: > > shadow.h:2: warning: declaration of 'int a' shadows a parameter > shadow.h:2: warning: shadowed declaration is here > > I don't see the reason for this warning, because the parameters of the second > parameter `b' AFAIK have nothing to do with parameters of the original > function `g'. (With gcc -Wshadow it compiles with no warnings.) > > It seems to me, that the warning is present from g++ 4.4 revision 140120, > which was a fix for PR37302. > > Is it the expected behavior? I haven't checked the standard yet... There is no standard for -Wshadow. I agree that this particular instance of the -Wshadow warning is useless. I encourage you to file a bug report about it. Ian
