# Floating point exception (core dumped) ./ruby -ve 'r = Marshal.load("\\x04\\bU:\\rRational\[\\ai\\x06i\\x0

**URL:** <https://www.ruby-forum.com/t/floating-point-exception-core-dumped-ruby-ve-r-marshal-load-x04-bu-rrational-ai-x06i-x0/136034>\
**Category:** Development\
**Created:** [April 28, 2008, 10:19am UTC](https://www.ruby-forum.com/t/floating-point-exception-core-dumped-ruby-ve-r-marshal-load-x04-bu-rrational-ai-x06i-x0/136034 "2008-04-28T10:19:42Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Tanaka\_A](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/c67d28/32.png) [@Tanaka\_A](https://www.ruby-forum.com/u/Tanaka_A)\
**Post date:** [April 28, 2008, 10:19am UTC](https://www.ruby-forum.com/t/floating-point-exception-core-dumped-ruby-ve-r-marshal-load-x04-bu-rrational-ai-x06i-x0/136034/1 "2008-04-28T10:19:42Z")

</div>

e$B0J2\<$N$h$&$K$9$k$He(B floating point exception e$B$K$J$j$^$9!#e(B

% ./ruby -ve ‘r = Marshal.load("\x04\bU:\rRational[\ai\x06i\x05"); r +  
r’  
ruby 1.9.0 (2008-04-28 revision 16229) [i686-linux]  
-e:1: warning: useless use of + in void context  
zsh: floating point exception (core dumped) ./ruby -ve ‘r =  
Marshal.load("\x04\bU:\rRational[\ai\x06i\x05"); r + r’  
% gdb ruby core.28086  
GNU gdb 6.4.90-debian  
Copyright © 2006 Free Software Foundation, Inc.  
GDB is free software, covered by the GNU General Public License, and you  
are  
welcome to change it and/or distribute copies of it under certain  
conditions.  
Type “show copying” to see the conditions.  
There is absolutely no warranty for GDB. Type “show warranty” for  
details.  
This GDB was configured as “i486-linux-gnu”…Using host libthread\_db  
library “/lib/tls/i686/cmov/libthread\_db.so.1”.

warning: Can’t read pathname for load map: Input/output error.  
Reading symbols from /lib/tls/i686/cmov/libpthread.so.0…done.  
Loaded symbols for /lib/tls/i686/cmov/libpthread.so.0  
Reading symbols from /lib/tls/i686/cmov/librt.so.1…done.  
Loaded symbols for /lib/tls/i686/cmov/librt.so.1  
Reading symbols from /lib/tls/i686/cmov/libdl.so.2…done.  
Loaded symbols for /lib/tls/i686/cmov/libdl.so.2  
Reading symbols from /lib/tls/i686/cmov/libcrypt.so.1…done.  
Loaded symbols for /lib/tls/i686/cmov/libcrypt.so.1  
Reading symbols from /lib/tls/i686/cmov/libm.so.6…done.  
Loaded symbols for /lib/tls/i686/cmov/libm.so.6  
Reading symbols from /lib/tls/i686/cmov/libc.so.6…done.  
Loaded symbols for /lib/tls/i686/cmov/libc.so.6  
Reading symbols from /lib/ld-linux.so.2…Reading symbols from  
/usr/lib/debug/lib/ld-2.3.6.so…done.  
done.  
Loaded symbols for /lib/ld-linux.so.2  
Reading symbols from  
/home/akr/ruby/yarvo0/lib/ruby/1.9.0/i686-linux/enc/encdb.so…done.  
Loaded symbols for  
/home/akr/ruby/yarvo0/lib/ruby/1.9.0/i686-linux/enc/encdb.so  
Reading symbols from  
/home/akr/ruby/yarvo0/lib/ruby/1.9.0/i686-linux/enc/trans/transdb.so…done.  
Loaded symbols for  
/home/akr/ruby/yarvo0/lib/ruby/1.9.0/i686-linux/enc/trans/transdb.so  
Core was generated by `./ruby -ve r =  
Marshal.load("\x04\bU:\rRational[\ai\x06i\x05"); r + r’.  
Program terminated with signal 8, Arithmetic exception.  
#0 0x080acfb0 in f\_addsub (self=135971680, anum=3, aden=1, bnum=3,  
bden=1, k=43) at rational.c:632  
632 VALUE a = f\_imul(an, bd / ig);  
(gdb) p an  
$1 = 1  
(gdb) p bd  
$2 = 0  
(gdb) p ig  
$3 = 0  
(gdb) bt  
#0 0x080acfb0 in f\_addsub (self=135971680, anum=3, aden=1, bnum=3,  
bden=1, k=43) at rational.c:632  
#1 0x080ace1d in nurat\_add (self=135971680, other=135971680) at  
rational.c:686  
#2 0x0810b3ab in call\_cfunc (func=0x80acd34 \<nurat\_add\>,  
recv=135971680, len=1, argc=1, argv=0xb7da7028)  
at vm\_insnhelper.c:288  
#3 0x08112eb2 in vm\_call\_cfunc (th=0x81aa160, reg\_cfp=0xb7e26f60,  
num=1, id=43, recv=135971680, klass=136026260, flag=0,  
mn=0x81b968c, blockptr=0x0) at vm\_insnhelper.c:372  
#4 0x081129fc in vm\_call\_method (th=0x81aa160, cfp=0xb7e26f60, num=1,  
blockptr=0x0, flag=0, id=43, mn=0x81b9678,  
recv=135971680, klass=136026260) at vm\_insnhelper.c:504  
#5 0x0810fc99 in vm\_eval (th=0x81aa160, initial=0) at insns.def:1408  
#6 0x0811308b in vm\_eval\_body (th=0x81aa160) at vm.c:1147  
#7 0x081136e3 in rb\_iseq\_eval (iseqval=135971960) at vm.c:1356  
#8 0x0805ba0f in ruby\_exec\_node (n=0x81ac478, file=0x0) at eval.c:227  
#9 0x0805bab2 in ruby\_run\_node (n=0x81ac478) at eval.c:255  
#10 0x08058b48 in main (argc=3, argv=0xbfea3864, envp=0xbfea3874) at  
main.c:35  
(gdb)