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Summary: segfault in FTC_CMapCache_Lookup() https://bugzilla.redhat.com/show_bug.cgi?id=513582 Summary: segfault in FTC_CMapCache_Lookup() Product: Fedora Version: 11 Platform: All OS/Version: Linux Status: NEW Severity: medium Priority: low Component: freetype AssignedTo: besfa...@redhat.com ReportedBy: fabr...@bellet.info QAContact: extras...@fedoraproject.org CC: fabr...@bellet.info, besfa...@redhat.com, ke...@tigcc.ticalc.org, fedora-fonts-bugs-list@redhat.com Classification: Fedora I have a VTK application that segfaults in libfreetype, when text in rendered. I tried to look for details with gdb, and the problem seems to be in the inlined code of FTC_CACHE_LOOKUP_CMP, called just before ftccmap.c:382. The crash occurs when optimization is enabled. In this case, node is stored in a register, and for an unknown reason, node is reset to zero before being dereferenced. The code following the _Ok label, in the macro definition of FTC_CACHE_LOOKUP_CMP _pnode = (FTC_Node*)(void*)&(node); *_pnode = _node; seems equivalent to this simpler version : node = _node; And the app no longer crashes with this fix. I'll attach the simple VTK app that generates the crash for me. Compile it, with vtk-devel installed, with : gcc -c AppliPlanes.cxx -I/usr/include/vtk gcc -o AppliPlanes AppliPlanes.o -lvtkRendering -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug. _______________________________________________ Fedora-fonts-bugs-list mailing list Fedora-fonts-bugs-list@redhat.com https://www.redhat.com/mailman/listinfo/fedora-fonts-bugs-list
