[Bug fortran/40734] ICE on attempt to compile trivial Fortran program

["al dot danial at ngc dot com" <gcc-bugzilla@gcc.gnu.org>]

------- Comment #6 from al dot danial at ngc dot com  2009-07-13 18:51 -------
(In reply to comment #5)
> My guess would be you have configured libgmp or libmpfr for a different CPU
> than you really have.  Try
> gdb --args /apps/gcc/4.4.0/libexec/gcc/i686-pc-linux-gnu/4.4.0/f951 hello.f
> run
> and see on which insn it crashed (disas $pc-32 $pc+32)?
> 
> Another possibility is the binary got corrupted.

>  gdb --args /apps/gcc/4.4.0/libexec/gcc/i686-pc-linux-gnu/4.4.0/f951 hello.f
GNU gdb Red Hat Linux (6.3.0.0-1.132.EL4rh)
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GDB is free software, covered by the GNU General Public License, and you are
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There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-redhat-linux-gnu"...Using host libthread_db
library "/lib/tls/libthread_db.so.1".

(gdb) run
Starting program: /apps/gcc/4.4.0/libexec/gcc/i686-pc-linux-gnu/4.4.0/f951
hello.f

Program received signal SIGILL, Illegal instruction.
0x009c0cb9 in __gmpn_submul_1 () from /apps/gmp/4.2.2/lib/libgmp.so.3

(gdb) where
#0  0x009c0cb9 in __gmpn_submul_1 () from /apps/gmp/4.2.2/lib/libgmp.so.3
#1  0x009cd5a2 in __gmpn_sb_divrem_mn () from /apps/gmp/4.2.2/lib/libgmp.so.3
#2  0x00000000 in ?? ()

(gdb) disas $pc-32 $pc+32
Dump of assembler code from 0x9c0c99 to 0x9c0cd9:
0x009c0c99 <__gmpn_submul_1+2>: leave
0x009c0c9a <__gmpn_submul_1+3>: mov    0x8(%esp),%eax
0x009c0c9e <__gmpn_submul_1+7>: pcmpeqd %mm0,%mm0
0x009c0ca1 <__gmpn_submul_1+10>:        movd   0x10(%esp),%mm7
0x009c0ca6 <__gmpn_submul_1+15>:        pcmpeqd %mm6,%mm6
0x009c0ca9 <__gmpn_submul_1+18>:        mov    0x4(%esp),%edx
0x009c0cad <__gmpn_submul_1+22>:        psrlq  $0x20,%mm0
0x009c0cb1 <__gmpn_submul_1+26>:        mov    0xc(%esp),%ecx
0x009c0cb5 <__gmpn_submul_1+30>:        psllq  $0x20,%mm6
0x009c0cb9 <__gmpn_submul_1+34>:        psubq  %mm0,%mm6
0x009c0cbc <__gmpn_submul_1+37>:        psubq  %mm1,%mm0
0x009c0cbf <__gmpn_submul_1+40>:        movd   (%eax),%mm1
0x009c0cc2 <__gmpn_submul_1+43>:        lea    0x4(%eax),%eax
0x009c0cc5 <__gmpn_submul_1+46>:        movd   (%edx),%mm2
0x009c0cc8 <__gmpn_submul_1+49>:        paddq  %mm6,%mm2
0x009c0ccb <__gmpn_submul_1+52>:        pmuludq %mm7,%mm1
0x009c0cce <__gmpn_submul_1+55>:        psubq  %mm1,%mm2
0x009c0cd1 <__gmpn_submul_1+58>:        paddq  %mm2,%mm0
0x009c0cd4 <__gmpn_submul_1+61>:        sub    $0x1,%ecx
0x009c0cd7 <__gmpn_submul_1+64>:        movd   %mm0,(%edx)
End of assembler dump.
(gdb)

yeah, something with GMP.  I'll rebuild it, then rebuild GCC 4.4.0, report what
happens.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40734