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Bug#805820: marked as done (-Wuninitialized provokes unexpected error with LTO)

Your message dated Wed, 23 Jan 2019 10:00:21 +0000
with message-id <E1gmFKX-000B2o-7A@fasolo.debian.org>
and subject line Bug#920166: Removed package(s) from unstable
has caused the Debian Bug report #805820,
regarding -Wuninitialized provokes unexpected error with LTO
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 owner@bugs.debian.org
immediately.)


-- 
805820: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=805820
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: g++-5
Version: 5.2.1-23

$ type g++-5
g++-5 is /usr/bin/g++-5
$ dpkg -l g++-5 libstdc++-5-dev
Desired=Unknown/Install/Remove/Purge/Hold
|
Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name           Version      Architecture Description
+++-==============-============-============-=================================
ii  g++-5          5.2.1-23     i386         GNU C++ compiler
ii  libstdc++-5-de 5.2.1-23     i386         GNU Standard C++ Library v3
(deve
$ uname -a
Linux deodand 4.2.0-1-686-pae #1 SMP Debian 4.2.3-2 (2015-10-14) i686
GNU/Linux
$ cat t.cc
#include <regex>
#include <string>

int main() {
  std::string a;
  std::regex r("x");
  return std::regex_match(a, r);
}
$ g++-5 -O2 -std=c++11 -Wuninitialized -c t.cc
$ g++-5 -O2 -std=c++11 -Wuninitialized -o t t.o
$ g++-5 -O2 -flto -fuse-linker-plugin -std=c++11 -Wuninitialized -c t.cc
$ g++-5 -O2 -flto -fuse-linker-plugin -std=c++11 -Wuninitialized -o t t.o
/usr/include/c++/5/bits/regex_compiler.tcc: In member function
‘_M_alternative’:
/usr/include/c++/5/bits/regex_compiler.tcc:266:8: warning: ‘__n’ may be
used uninitialized in this function [-Wmaybe-uninitialized]
        for (long __i = 0; __i < __n; ++__i)
        ^
/usr/include/c++/5/bits/regex_compiler.tcc:230:9: note: ‘__n’ was
declared here
    long __n;
         ^

The relevant bit of regex_compiler.tcc looks OK to me so I think this is
the compiler rather than the std::regex implementation.  ICBW.

ttfn/rjk

--- End Message ---
--- Begin Message --- 
Version: 5.5.0-12+rm

Dear submitter,

as the package gcc-5 has just been removed from the Debian archive
unstable we hereby close the associated bug reports.  We are sorry
that we couldn't deal with your issue properly.

For details on the removal, please see https://bugs.debian.org/920166

The version of this package that was in Debian prior to this removal
can still be found using http://snapshot.debian.org/.

This message was generated automatically; if you believe that there is
a problem with it please contact the archive administrators by mailing
ftpmaster@ftp-master.debian.org.

Debian distribution maintenance software
pp.
Scott Kitterman (the ftpmaster behind the curtain)

--- End Message ---
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