Bug#456930: marked as done (g++-4.3: Integer variable value lost due to optimizations?)

[Debian Bug Tracking System]

Your message dated Sun, 20 Apr 2008 18:47:09 +0200
with message-id <[EMAIL PROTECTED]>
and subject line Re: g++-4.3: Integer variable value lost due to optimizations?
has caused the Debian Bug report #456930,
regarding g++-4.3: Integer variable value lost due to optimizations?
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact [EMAIL PROTECTED]
immediately.)


-- 
456930: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=456930
Debian Bug Tracking System
Contact [EMAIL PROTECTED] with problems

--- Begin Message ---

Package: g++-4.3
Version: 4.3-20071130-1
Severity: normal

Hi,

I've got the following code to constructor an acceptor:
server::server(asio::io_service& io_service, request_handler& req_handler, int 
fcgi_port):
        acceptor_(io_service, asio::ip::tcp::endpoint(asio::ip::tcp::v4(), 
fcgi_port)),
        io_service_(io_service),
        new_connection_(new connection(io_service, *this)),
        request_handler_(req_handler)
{
#ifdef TCP_DEFER_ACCEPT
        int v = true;
        setsockopt(acceptor_.native(), IPPROTO_TCP, TCP_DEFER_ACCEPT, &v, 
sizeof(v));
#endif
        acceptor_.async_accept(new_connection_->socket(), 
boost::bind(&server::handle_accept, this, asio::placeholders::error));
}

With CMAKE_BUILD_TYPE release, bind is called with port = 0

bind(8, {sa_family=AF_INET, sin_port=htons(0), sin_addr=inet_addr("0.0.0.0")}, 
16) = 0

although I'm quite sure it should be 2711.
Without CMAKE_BUILD_TYPE release, the code works fine.

I can't guarantee this is a bug in g++ though.
I'll try to reproduce this with less code.

-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 2.6.23-1-686 (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                   4.3-20071130-1 The GNU C compiler
ii  gcc-4.3-base              4.3-20071130-1 The GNU Compiler Collection (base 
ii  libc6                     2.7-4          GNU C Library: Shared libraries
ii  libgmp3c2                 2:4.2.2+dfsg-1 Multiprecision arithmetic library
ii  libmpfr1ldbl              2.3.0.dfsg.1-2 multiple precision floating-point 
ii  libstdc++6-4.3-dev        4.3-20071130-1 The GNU Standard C++ Library v3 (d

g++-4.3 recommends no packages.

-- no debconf information

--- End Message ---

--- Begin Message ---

not a bug:

basic_endpoint()
    : data_()
  {
    asio::detail::sockaddr_in4_type& data
      = reinterpret_cast<asio::detail::sockaddr_in4_type&>(data_);
    data.sin_family = 2;
    data.sin_port = 0;
    data.sin_addr.s_addr = ((in_addr_t) 0x00000000);
  }

you are violating C/C++ type-based aliasing rules here (and in other
places).

--- End Message ---