http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60088
--- Comment #7 from kargl at gcc dot gnu.org --- (In reply to Jacob Abel from comment #6) > (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. No. It showed that you ran 'gcc -v' on a linux system, and it showed that you ran some other 'gcc -march=native yada' command line. It did not show a segfault or a backtrace. It did not show any problem with linux and it did not show a problem on mingw. > Here's the gdb output: Oh, here's the missing information. > 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) Too bad you forgot to at least type bt at the (gdb) prompt. > > 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. And, I stated it works fine of 2 different architectures, and yes, I used the options that you provided.
