From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 10770 invoked by alias); 1 Apr 2005 08:14:12 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 10707 invoked by uid 48); 1 Apr 2005 08:14:02 -0000 Date: Fri, 01 Apr 2005 08:14:00 -0000 From: "loose at astron dot nl" To: gcc-bugs@gcc.gnu.org Message-ID: <20050401081358.20710.loose@astron.nl> Reply-To: gcc-bugzilla@gcc.gnu.org Subject: [Bug c++/20710] New: g++ should warn when hiding non-virtual method in base class X-Bugzilla-Reason: CC X-SW-Source: 2005-04/txt/msg00022.txt.bz2 List-Id: I was wondering whether it is possible to have GCC produce a warning whenever a non-virtual method in the base class is hidden by a method in the derived class. I know this is possible for virtual methods by using the -Woverload-virtual switch, but I haven't been able to find the equivalent for non-virtual methods. For example, I would like GCC to produce a warning about the following code. $ cat tHide.cc class A { public: void f() {} }; class B : public A { public: void f(int) {} }; int main() { A a; B b; b.f(10); a.f(); } Something like: warning: void A::f() was hidden by void B::f(int) $ g++ -v -save-temps -Wall -Wextra tHide.cc Reading specs from /usr/local/gcc343/lib/gcc/i686-pc-linux-gnu/3.4.3/specs Configured with: ../gcc-3.4.3/configure --prefix=/usr/local/gcc343 --enable- threads=posix Thread model: posix gcc version 3.4.3 /usr/local/gcc343/libexec/gcc/i686-pc-linux-gnu/3.4.3/cc1plus -E -quiet -v - D_GNU_SOURCE tHide.cc -mtune=pentiumpro -Wall -Wextra -o tHide.ii ignoring nonexistent directory "/usr/local/gcc343/lib/gcc/i686-pc-linux- gnu/3.4.3/../../../../i686-pc-linux-gnu/include" #include "..." search starts here: #include <...> search starts here: /usr/local/gcc343/lib/gcc/i686-pc-linux-gnu/3.4.3/../../../../include/c++/3.4.3 /usr/local/gcc343/lib/gcc/i686-pc-linux- gnu/3.4.3/../../../../include/c++/3.4.3/i686-pc-linux-gnu /usr/local/gcc343/lib/gcc/i686-pc-linux- gnu/3.4.3/../../../../include/c++/3.4.3/backward /usr/local/include /usr/local/gcc343/include /usr/local/gcc343/lib/gcc/i686-pc-linux-gnu/3.4.3/include /usr/include End of search list. /usr/local/gcc343/libexec/gcc/i686-pc-linux-gnu/3.4.3/cc1plus -fpreprocessed tHide.ii -quiet -dumpbase tHide.cc -mtune=pentiumpro -auxbase tHide -Wall - Wextra -version -o tHide.s GNU C++ version 3.4.3 (i686-pc-linux-gnu) compiled by GNU C version 3.4.3. GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 as -V -Qy -o tHide.o tHide.s GNU assembler version 2.13.90.0.18 (i386-redhat-linux) using BFD version 2.13.90.0.18 20030206 /usr/local/gcc343/libexec/gcc/i686-pc-linux-gnu/3.4.3/collect2 --eh-frame-hdr - m elf_i386 -dynamic-linker /lib/ld- linux.so.2 /usr/lib/crt1.o /usr/lib/crti.o /usr/local/gcc343/lib/gcc/i686-pc- linux-gnu/3.4.3/crtbegin.o -L/usr/local/gcc343/lib/gcc/i686-pc-linux-gnu/3.4.3 - L/usr/local/gcc343/lib/gcc/i686-pc-linux-gnu/3.4.3/../../.. tHide.o -lstdc++ - lm -lgcc_s -lgcc -lc -lgcc_s -lgcc /usr/local/gcc343/lib/gcc/i686-pc-linux- gnu/3.4.3/crtend.o /usr/lib/crtn.o -- Summary: g++ should warn when hiding non-virtual method in base class Product: gcc Version: 3.4.3 Status: UNCONFIRMED Severity: enhancement Priority: P2 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: loose at astron dot nl CC: gcc-bugs at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20710