Trouble with hmetis crash when giving "fix" file.

Hi,

I am using hmetis with a fix file, but it crashes (see below). All is fine if I leave the fix file off...

GraphFile
================
2 3
1 2
1 3
================

FixFile
================
0
-1
-1
================

shmetis GraphFile FixFile 2 10
*******************************************************************************
HMETIS 1.5.3 Copyright 1998, Regents of the University of Minnesota

HyperGraph Information -----------------------------------------------------
Name: submap1.hmetis, #Vtxs: 3, #Hedges: 2, #Parts: 2, UBfactor: 0.10
Options: HFC, FM, Reconst-False, V-cycles @ End, With Fixed Vertices

Recursive Partitioning... --------------------------------------------------
*** glibc detected *** shmetis: free(): invalid pointer: 0x08f1a308 ***
======= Backtrace: =========
/lib/libc.so.6[0xaf3a31]
shmetis(vfprintf+0x28d3)[0x804afd7]
shmetis[0x80564eb]
shmetis[0x80523ff]
shmetis[0x80502cb]
shmetis(vfprintf+0x1d3b)[0x804a43f]
shmetis(__strtol_internal+0x3ec)[0x8048b20]
/lib/libc.so.6(__libc_start_main+0xe6)[0xa9bce6]
shmetis(fopen+0x5d)[0x8048811]
======= Memory map: ========
00a63000-00a81000 r-xp 00000000 68:03 788940 /lib/ld-2.12.so
00a81000-00a82000 r-xp 0001d000 68:03 788940 /lib/ld-2.12.so
00a82000-00a83000 rwxp 0001e000 68:03 788940 /lib/ld-2.12.so
00a85000-00c0e000 r-xp 00000000 68:03 786884 /lib/libc-2.12.so
00c0e000-00c0f000 ---p 00189000 68:03 786884 /lib/libc-2.12.so
00c0f000-00c11000 r-xp 00189000 68:03 786884 /lib/libc-2.12.so
00c11000-00c12000 rwxp 0018b000 68:03 786884 /lib/libc-2.12.so
00c12000-00c15000 rwxp 00000000 00:00 0
00c24000-00c4c000 r-xp 00000000 68:03 788880 /lib/libm-2.12.so
00c4c000-00c4d000 r-xp 00027000 68:03 788880 /lib/libm-2.12.so
00c4d000-00c4e000 rwxp 00028000 68:03 788880 /lib/libm-2.12.so
08048000-0805b000 r-xp 00000000 00:32 27463066 /home/jbishop/hmetis-1.5-linux/shmetis
0805b000-0805c000 rwxp 00012000 00:32 27463066 /home/jbishop/hmetis-1.5-linux/shmetis
0805c000-08083000 rwxp 00000000 00:00 0
08f1a000-08f3b000 rwxp 00000000 00:00 0 [heap]
f775a000-f775b000 rwxp 00000000 00:00 0
f7763000-f777d000 r-xp 00000000 00:33 2197860368 /sierra/project/tools/linux_x86_64_2.12-2012-04-10-00.00.01/stow/gcc-4.6.1/lib/libgcc_s.so.1
f777d000-f777e000 rwxp 00019000 00:33 2197860368 /sierra/project/tools/linux_x86_64_2.12-2012-04-10-00.00.01/stow/gcc-4.6.1/lib/libgcc_s.so.1
f777e000-f7781000 rwxp 00000000 00:00 0
f7781000-f7782000 r-xp 00000000 00:00 0 [vdso]
fffa5000-fffea000 rwxp 00000000 00:00 0 [stack]
Aborted (core dumped)

I am on linux...

uname -a
Linux mymachine 2.6.32-220.el6.x86_64 #1 SMP Tue Dec 6 19:48:22 GMT 2011 x86_64 x86_64 x86_64 GNU/Linux

Thanks,

Jon