I am sorry, that comment about the patch to cxlapack.cpp was my mistake. Nevertheless, the bug can be fixed (at least on i386) by building the package with an empty debian/patches/ directory. Since my original guess was wrong, I can only speculate that the problem is related to fix_3rdparty_build.patch. Maybe it is caused by some incompatibility between the lapack in the package and the one from Ubuntu.
** Bug watch added: code.ros.org/trac/opencv/ #656 https://code.ros.org/trac/opencv/ticket/656 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/684302 Title: cvInvert may cause segmentation fault -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs