https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122052
--- Comment #3 from edison <edison_chan_gz at hotmail dot com> --- (In reply to Andrew Pinski from comment #1) > >Compilation completes successfully, but the binary crashes immediately upon > >invocation. > > What is the stack limit that you are running with? > > -Ofast enables -fstack-arrays which can cause the stack usage to be very > high. edison@localhost:~/cpu2017$ ulimit -a real-time non-blocking time (microseconds, -R) unlimited core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 40 file size (blocks, -f) unlimited pending signals (-i) 54655 max locked memory (kbytes, -l) 64 max memory size (kbytes, -m) unlimited open files (-n) 32768 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) unlimited cpu time (seconds, -t) unlimited max user processes (-u) 54655 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited