Public bug reported: Binary package hint: gcc-4.1
[ Note: This is a bounce from http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37001 ] Wireshark's Buildbot system recently uncovered what appears to be a bug in gcc. The following code: static guint tap_current=0; [ ... ] fprintf(stderr, "dissect_bssmap tap_current: %u\n", tap_current); produces the following output: dissect_bssmap tap_current: 2801996644 'lsb_release -rd' output: Description: Ubuntu 7.10 Release: 7.10 'dpkg -l | grep gcc' output: ii gcc 4:4.1.2-9ubuntu2 The GNU C compiler ii gcc-3.3-base 1:3.3.6-15ubuntu2 The GNU Compiler Collection (base package) ii gcc-4.1 4.1.2-16ubuntu2 The GNU C compiler ii gcc-4.1-base 4.1.2-16ubuntu2 The GNU Compiler Collection (base package) ii gcc-4.2-base 4.2.1-5ubuntu4 The GNU Compiler Collection (base package) ii lib32gcc1 1:4.2.1-5ubuntu4 GCC support library (32 bit Version) ii libgcc1 1:4.2.1-5ubuntu4 GCC support library 'gcc -v' output: Using built-in specs. Target: x86_64-linux-gnu Configured with: ../src/configure -v --enable-languages=c,c++,fortran,objc,obj-c++,treelang --prefix=/usr --enable-shared --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --enable-nls --with-gxx-include-dir=/usr/include/c++/4.1.3 --program-suffix=-4.1 --enable-__cxa_atexit --enable-clocale=gnu --enable-libstdcxx-debug --enable-mpfr --enable-checking=release x86_64-linux-gnu Thread model: posix gcc version 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2) Steps to reproduce: Download a recent Wireshark tarball from http://www.wireshark.org/download/automated/src/ or check out from SVN at http://anonsvn.wireshark.org/wireshark/trunk/ Apply the attached patch and build Wireshark. Download the capture file from http://www.wireshark.org/download/automated/captures/fuzz-2008-07-31-3587.pcap Run './tshark -nVr /tmp/fuzz-2008-07-31-3587.pcap > /dev/null 2> /tmp/tp.out; head -10 /tmp/tp.out' You should see something like the following: dissect_bssmap tap_current: 2801996644 dissect_bssmap tap_current: 0 dissect_bssmap tap_current: 1 dissect_dtap tap_current: 2801996612 dissect_bssmap tap_current: 2 dissect_dtap tap_current: 0 dissect_bssmap tap_current: 3 dissect_dtap tap_current: 1 dissect_bssmap tap_current: 0 dissect_bssmap tap_current: 1 Sorry I don't have a smaller test case. ** Affects: gcc-4.1 (Ubuntu) Importance: Undecided Status: New -- Uninitialized static variables on x86_64 https://bugs.launchpad.net/bugs/254025 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
