Hi, Linux 2.6.31.4 PowerPC gcc -O2 doesn't like _builtin_longjmp in m_machine.c signal handler, it SIGSEGV after catching SIGILL. (machine F 1 V 1 FX 0 GX 1) Adding '#pragma GCC optimize ("-O0")' in m_machine.c and recompiling the packet seems to work, I don't use valgrind with multi-threads programs though. Gcc -v output: Using built-in specs. Target: powerpc-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.4.1-4ubuntu8' --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --enable-shared --enable-multiarch --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.4 --program-suffix=-4.4 --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --disable-softfloat --enable-secureplt --enable-targets=powerpc-linux,powerpc64-linux --with-cpu=default32 --disable-werror --with-long-double-128 --enable-checking=release --build=powerpc-linux-gnu --host=powerpc-linux-gnu --target=powerpc-linux-gnu Thread model: posix gcc version 4.4.1 (Ubuntu 4.4.1-4ubuntu8)
Is that the gcc compiler included in Ubuntu Karmic Koala ?
(In reply to comment #1) > Is that the gcc compiler included in Ubuntu Karmic Koala ? Yes it is, Ubuntu compiler and Ubuntu valgrind package.
(In reply to comment #2) > (In reply to comment #1) > > Is that the gcc compiler included in Ubuntu Karmic Koala ? > > Yes it is, Ubuntu compiler and Ubuntu valgrind package. Did I understand correctly that the Valgrind package included in the ppc edition of Ubuntu Karmic Koala is broken ? If so, has this issue already been reported to Ubuntu via https://launchpad.net/ ? If not, can you please do this and post the Launchpad id here ?
(In reply to comment #3) > (In reply to comment #2) > > (In reply to comment #1) > > > Is that the gcc compiler included in Ubuntu Karmic Koala ? > > > > Yes it is, Ubuntu compiler and Ubuntu valgrind package. > > Did I understand correctly that the Valgrind package included in the ppc > edition of Ubuntu Karmic Koala is broken ? If so, has this issue already been If it throws an exception in m_machine.c machine_get_hwcaps() then yes it's broken at least it's what I'm seeing here. > reported to Ubuntu via https://launchpad.net/ ? If not, can you please do this > and post the Launchpad id here ? I don't know how to use launchpad Didier
I can confirm this bug, and also that the workaround works. OS Debian testing on PowerPC valgrind 3.6.0 gcc 4.4.5
The same bug is still present with Ubuntu 11.04 on PPC32: - machine: PowerPC G4 "Silver" - cpu PPC 7450/800 MHz - compiler gcc-4.5.2 (4.5.2-8ubuntu4) - libc glibc-2.13-1 (2.13-0ubuntu13) The optimisation fix seems to work, i.e. 'valgrind ls' doesn't crash.
Ummm, I forgot to mention that Ubuntu 10.4 comes with Valgrind 3.6.1. I also opened an Ubuntu bug report <https://bugs.launchpad.net/ubuntu/+source/valgrind/+bug/783020>.
This has been fixed in the trunk now (bug 259977). I was not aware that 259977 duplicates this bug. Closing as dup of 259977. *** This bug has been marked as a duplicate of bug 259977 ***