Bug#488884: g++-4.3: Option -O{1,2,3} generates spurious warnings with -Wconversion
Package: g++-4.3
Version: 4.3.1-4
Severity: normal
The following file compiles without warning with:
$ g++ -Wconversion -c htons.cpp
but generates a warning with :
$ g++ -O2 -Wconversion -c htons.cpp
(also with -O1 or -O3)
This basically generates spurious warnings
or even prevents building if strict -Werror is used.
------------------------------------------
#include <netinet/in.h>
#include <arpa/inet.h>
void test( int port )
{
struct sockaddr_in sa;
sa.sin_port = htons( (uint16_t)port ); // << Warning here in optimized mode
}
-------------------------------------
Sincerely
-- System Information:
Debian Release: lenny/sid
APT prefers unstable
APT policy: (500, 'unstable'), (500, 'stable')
Architecture: i386 (i686)
Kernel: Linux 2.6.25-2-686 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages g++-4.3 depends on:
ii gcc-4.3 4.3.1-4 The GNU C compiler
ii gcc-4.3-base 4.3.1-4 The GNU Compiler Collection (base
ii libc6 2.7-12 GNU C Library: Shared libraries
ii libgmp3c2 2:4.2.2+dfsg-3 Multiprecision arithmetic library
ii libmpfr1ldbl 2.3.1.dfsg.1-2 multiple precision floating-point
ii libstdc++6-4.3-dev 4.3.1-4 The GNU Standard C++ Library v3 (d
g++-4.3 recommends no packages.
-- no debconf information
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