http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60088
--- Comment #6 from Jacob Abel <thatcadguy at gmail dot com> --- (In reply to Steve Kargl from comment #5) > What output file? gcc_flags.txt does not show a segfault > or a debugger backtrace. It shows that I was not using MinGW, as you assumed. Here's the gdb output: jake@Jake-E1505:~/Downloads$ gdb sip_test GNU gdb (GDB) 7.5.91.20130417-cvs-ubuntu Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "i686-linux-gnu". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... Reading symbols from /home/jake/Downloads/sip_test...done. (gdb) start Temporary breakpoint 1 at 0x8048ec0: file sip_test.f90, line 1. Starting program: /home/jake/Downloads/sip_test Temporary breakpoint 1, MAIN__ () at sip_test.f90:1 1 PROGRAM main (gdb) continue Continuing. Program received signal SIGSEGV, Segmentation fault. 0x0804a9bb in sip (as=..., aw=..., ao=..., ae=..., an=..., s=..., x=..., n=40, k=1600, alp=<error reading variable>, tol=<error reading variable>, lim=200, show=.TRUE., fail=.FALSE.) at sip.f90:19 19 b = zero; c = zero; d = zero; e = zero; f = zero (gdb) And the normal output: jake@Jake-E1505:~/Downloads$ ./sip_test Program received signal SIGSEGV: Segmentation fault - invalid memory reference. Backtrace for this error: #0 0xB76C3CAB #1 0xB76C42FC #2 0xB77C33FF #3 0x804A9BB in sip_ at sip.f90:19 (discriminator 6) #4 0x804A411 in MAIN__ at sip_test.f90:45 Segmentation fault (core dumped) As I stated, if you take away the -march=native compile flag, it's fine.
