[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Bug#479086: g++-4.2: misoptimizes kikithebot at -O2 on amd64



Package: g++-4.2
Version: 4.2.3-4
Severity: normal

g++-4.2 miscompiles kikithebot (not yet uploaded) at -O2 on amd64. In
the attached testcase the KikiEvent destructor gets stuck in an
infinite loop if the actions vector is non-empty. I've reduced it as
far as I could.

To reproduce:
   g++ -O2 KikiEvent.cpp KikiEventMain.cpp -o kiki
   ./kiki

Files included in the tarball:
   KikiEvent.cpp: the code that gets miscompiled
   KikiEvent.i: preprocessed version
   KikiEventMain.cpp: a main function to test
     (the bug doesn't manifest itself if I just add this to KikiEvent.cpp)

-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.24-1-amd64 (SMP w/1 CPU core)
Locale: LANG=nl_BE.UTF-8, LC_CTYPE=nl_BE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages g++-4.2 depends on:
ii  gcc-4.2                       4.2.3-4    The GNU C compiler
ii  gcc-4.2-base                  4.2.3-4    The GNU Compiler Collection (base 
ii  libc6                         2.7-10     GNU C Library: Shared libraries
ii  libstdc++6-4.2-dev            4.2.3-4    The GNU Standard C++ Library v3 (d

g++-4.2 recommends no packages.

-- no debconf information

Attachment: KikiEvent.tar.gz
Description: GNU Zip compressed data


Reply to: