# \[Bug #1655\] fdiv $B$N;HMQ$G(B Segmentation fault $B$,H/@8$9$k(B

**URL:** <https://www.ruby-forum.com/t/bug-1655-fdiv-b-n-hmq-g-b-segmentation-fault-b-h-8-9-k-b/170530>\
**Category:** Development\
**Created:** [June 18, 2009, 3:50pm UTC](https://www.ruby-forum.com/t/bug-1655-fdiv-b-n-hmq-g-b-segmentation-fault-b-h-8-9-k-b/170530 "2009-06-18T15:50:38Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![tadayoshi\_funaba](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/f0a364/32.png) [@tadayoshi\_funaba](https://www.ruby-forum.com/u/tadayoshi_funaba)\
**Post date:** [June 18, 2009, 3:50pm UTC](https://www.ruby-forum.com/t/bug-1655-fdiv-b-n-hmq-g-b-segmentation-fault-b-h-8-9-k-b/170530/1 "2009-06-18T15:50:38Z")

</div>

Bug #1655: fdiv e$B$N;HMQ$Ge(B Segmentation fault e$B$,H/@8$9$ke(B  
[http://redmine.ruby-lang.org/issues/show/1655](http://redmine.ruby-lang.org/issues/show/1655)

e$B5/I\<\<Te(B: tadayoshi funaba  
e$B%9%F!\<%?%9e(B: Open, e$BM%@hEYe(B: Normal  
ruby -v: ruby 1.9.1p129 (2009-05-12 revision 23412) [i686-linux]

fdiv e$B$N;HMQ$Ge(B Segmentation fault e$B$,H/@8$7$^$9!#e(B

e$B%j%j!\<%9$7$?$b$N$G$b!“e(Btrunk e$B$G$bF1MM$G$9!#e(B  
e$B0z?t$N$I$A$i$+$Ke(B 0 e$B$,$”$k$H$\*$+$7$/$J$k$h$&$J5$$,$7$^$9!#e(B

$ ruby191 -e ‘(Float::MAX.to\_i\*2).fdiv(0)’  
-e:1: [BUG] Segmentation fault  
ruby 1.9.1p129 (2009-05-12 revision 23412) [i686-linux]

## – control frame ---------- c:0004 p:---- s:0010 b:0010 l:000009 d:000009 CFUNC :fdiv c:0003 p:0030 s:0006 b:0006 l:0025a4 d:001a1c EVAL -e:1 c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH c:0001 p:0000 s:0002 b:0002 l:0025a4 d:0025a4 TOP :17

– Ruby level backtrace  
information-----------------------------------------  
-e:1:in `fdiv' -e:1:in `’

## – C level backtrace information

0x81210c8 ruby191(rb\_vm\_bugreport+0x48) [0x81210c8]  
0x814d089 ruby191 [0x814d089]  
0x814d11b ruby191(rb\_bug+0x2b) [0x814d11b]  
0x80d3b56 ruby191 [0x80d3b56]  
0xb7fd2440 [0xb7fd2440]  
0x8139839 ruby191 [0x8139839]  
0x81142b6 ruby191 [0x81142b6]  
0x81163ff ruby191 [0x81163ff]  
0x811ac8a ruby191 [0x811ac8a]  
0x811ae25 ruby191(rb\_iseq\_eval\_main+0x95) [0x811ae25]  
0x805ce3f ruby191(ruby\_exec\_node+0x9f) [0x805ce3f]  
0x805e532 ruby191(ruby\_run\_node+0x42) [0x805e532]  
0x805bdf0 ruby191(main+0x60) [0x805bdf0]  
0xb7e08450 /lib/tls/i686/cmov/libc.so.6(\_\_libc\_start\_main+0xe0)  
[0xb7e08450]  
0x805bd21 ruby191 [0x805bd21]

[NOTE]  
You may encounter a bug of Ruby interpreter. Bug reports are welcome.  
For details: [http://www.ruby-lang.org/bugreport.html](http://www.ruby-lang.org/bugreport.html)

Aborted

$ ./ruby -e ‘(Float::MAX.to\_i\*2).fdiv(0)’  
-e:1: [BUG] Segmentation fault  
ruby 1.9.2dev (2009-06-18 trunk 23734) [i686-linux]

## – control frame ---------- c:0004 p:---- s:0010 b:0010 l:000009 d:000009 CFUNC :fdiv c:0003 p:0030 s:0006 b:0006 l:001ac4 d:002484 EVAL -e:1 c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH c:0001 p:0000 s:0002 b:0002 l:001ac4 d:001ac4 TOP

-e:1:in `<main>' -e:1:in `fdiv’

## – C level backtrace information

./ruby(rb\_vm\_bugreport+0xbd) [0x81649ad]  
./ruby [0x819e099]  
./ruby(rb\_bug+0x2b) [0x819e13b]  
./ruby [0x80f9065]  
[0xb7fe2440]  
./ruby [0x8187d5a]  
./ruby [0x815fdd0]  
./ruby [0x81534c9]  
./ruby [0x815b3c6]  
./ruby(rb\_iseq\_eval\_main+0x19b) [0x815b66b]  
./ruby(ruby\_exec\_node+0x94) [0x805d2c4]  
./ruby(ruby\_run\_node+0x42) [0x805f2f2]  
./ruby(main+0x60) [0x805c5b0]  
/lib/tls/i686/cmov/libc.so.6(\_\_libc\_start\_main+0xe0) [0xb7e18450]  
./ruby [0x805c4e1]

[NOTE]  
You may have encountered a bug in the Ruby interpreter or extension  
libraries.  
Bug reports are welcome.  
For details: [http://www.ruby-lang.org/bugreport.html](http://www.ruby-lang.org/bugreport.html)

Aborted