--- Begin Message ---
- To: Debian Bug Tracking System <submit@bugs.debian.org>
- Subject: g++-3.3: Warning about useless casts
- From: Sebastian Andersson <sa@hogia.net>
- Date: Wed, 10 Mar 2004 11:25:13 +0100
- Message-id: <m1B10tl-003wrSC@gamegirl>
Package: g++-3.3
Version: 1:3.3.3-1
Severity: wishlist
It would be nice if there was an option to add a warning about
"useless" casts. Although they are not really incorrect, they
might become incorrect/inefficient as the program evolves. Ie;
struct A { int a; };
struct B : A { int b; };
void func(A *a) { ++a; }
int main(int ac, char **av)
{
A a;
B b;
func((A*)&a); // Useless cast since a already is an A.
func(static_cast<A*>(&a)); // Just as useless.
func((A*)&b); // Useless cast since b is a kind of A.
func(static_cast<A*>(&b)); // Just as useless.
return 0;
}
-- System Information:
Debian Release: testing/unstable
APT prefers testing
APT policy: (990, 'testing'), (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)
Kernel: Linux 2.4.21-xfs
Locale: LANG=sv_SE, LC_CTYPE=sv_SE
Versions of packages g++-3.3 depends on:
ii gcc-3.3 1:3.3.3-1 The GNU C compiler
ii gcc-3.3-base 1:3.3.3-1 The GNU Compiler Collection (base
ii libc6 2.3.2.ds1-11 GNU C Library: Shared libraries an
ii libstdc++5-3.3-dev 1:3.3.3-1 The GNU Standard C++ Library v3 (d
-- no debconf information
--- End Message ---