Hi, https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=196439 On Fedora Core 5: gdb /usr/lib/valgrind/x86-linux/memcheck break _start_in_C run segfaults as the file's debug info references location list while no ".debug_loc" section exists there. eu-readelf -w /usr/lib/valgrind/x86-linux/memcheck DWARF section '.debug_info' at offset 0x14759c: ... [ 176d4] subprogram ... name "_start_in_C" ... frame_base location list [ 116d7] Trivia complaint on the file coherency, no frame_info debugging available for such functions. Regards, Jan Kratochvil