https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61785
Bug ID: 61785 Summary: Sigsegv with enabled optimize -Os , -O2 in sample_format_size Product: gcc Version: 4.8.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: dirkneukirchen at web dot de Created attachment 33109 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33109&action=edit i486-openwrt-linux-g++ -v output I get a SIGSEGV when running the binary compiled with default switches (containing -Os) in qemu. If I compile with -O0 the program is working. GCC 4.6.4 is generating working code with -Os 4.8.0, 4.8.3, 4.9.0 do not work with -Os ; -O0 binaries work Source is from mpd 0.18.11 gcc is used in OpenWrt buildroot to compile it for target arch (x86) I opened a ticket on mpd bugtracker, provided gdb output and was told it's a compiler bug - thats why I opened a ticket here. the mpd bugtracker ticket is: http://bugs.musicpd.org/view.php?id=4024 First time reporter.