# \[Bug #3258\] Segmentation fault in Bigdecimal.new

**URL:** <https://www.ruby-forum.com/t/bug-3258-segmentation-fault-in-bigdecimal-new/188230>\
**Category:** Development\
**Created:** [May 8, 2010, 2:26am UTC](https://www.ruby-forum.com/t/bug-3258-segmentation-fault-in-bigdecimal-new/188230 "2010-05-08T02:26:40Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\
**Post date:** [May 8, 2010, 2:26am UTC](https://www.ruby-forum.com/t/bug-3258-segmentation-fault-in-bigdecimal-new/188230/1 "2010-05-08T02:26:40Z")

</div>

Bug #3258: Segmentation fault in Bigdecimal.new  
[http://redmine.ruby-lang.org/issues/show/3258](http://redmine.ruby-lang.org/issues/show/3258)

e$B5/I\<\<Te(B: masaya tarui  
e$B%9%F!\<%?%9e(B: Open, e$BM%@hEYe(B: Normal  
Target version: 1.9.2  
ruby -v: ruby 1.9.2dev (2010-05-07 trunk 27658) [i386-mswin32\_90]

GC.stress = true  
require ‘bigdecimal’  
1000.times{|i| puts BigDecimal.new(“1” + “0”\*i) }  
e$B$r\<B9T$9$k$H!"e(B

ruby 1.9.2dev (2010-05-07 trunk 27658) [i386-mswin32\_90]  
0.1E1  
0.1E2  
0.1E3  
0.1E4  
0.1E5  
0.1E6  
0.1E7  
0.1E8  
0.1E9  
0.1E10  
0.46454294919296E12  
0.4294892378E12  
0.42949672324294858116E16  
/soft/ruby/build/t2.rb:3: [BUG] Segmentation fault  
ruby 1.9.2dev (2010-05-07 trunk 27658) [i386-mswin32\_90]

## – control frame ---------- c:0009 p:---- s:0022 b:0022 l:000021 d:000021 CFUNC :to\_s c:0008 p:---- s:0020 b:0020 l:000019 d:000019 CFUNC :puts c:0007 p:---- s:0018 b:0018 l:000017 d:000017 CFUNC :puts c:0006 p:0033 s:0014 b:0014 l:00220c d:000013 BLOCK /soft/ruby/build/t2.rb:3 c:0005 p:---- s:0011 b:0011 l:000010 d:000010 FINISH c:0004 p:---- s:0009 b:0009 l:000008 d:000008 CFUNC :times c:0003 p:0040 s:0006 b:0006 l:00220c d:00134c EVAL /soft/ruby/build/t2.rb:3 c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH c:0001 p:0000 s:0002 b:0002 l:00220c d:00220c TOP

## – Ruby level backtrace information

/soft/ruby/build/t2.rb:3:in `<main>' /soft/ruby/build/t2.rb:3:in `times’  
/soft/ruby/build/t2.rb:3:in `block in <main>' /soft/ruby/build/t2.rb:3:in `puts’  
/soft/ruby/build/t2.rb:3:in `puts' /soft/ruby/build/t2.rb:3:in `to\_s’

[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)

This application has requested the Runtime to terminate it in an unusual  
way.  
Please contact the application’s support team for more information.

e$B$N$h$&$KMn$A$^$9!#e(B(e$B$=$l0JA0$KCM$,$_$+$7$/$J$C$F$$$^$9$,e(B)  
bigdecimal.ce$B$Ne(BVpAlloce$B$K$_$$$F!“e(Bbufe$B$,e(Bvolatilee$B@k8@$5$l$F$$$^$9$,!“BP1~$9$kNN0h$,:GE,2=$K$h$C$F:G8e$K;HMQ$5$l$?8e$K0c$&MQES$G:FMxMQ$5$l$F$$$k$?$ae(BGCe$BBP:v$H$7$F0UL#$r@.$7$F$$$^$;$s!#e(B  
#e$B;d$N4D6-$G$Oe(Bif(szVal[i]==‘-’)e$B$N$”$?$j$G\>e=q$-$5$l$F$$$^$7$?!#e(B  
e$B@5$7$/BP:v$9$k$K$OFbItCM$r;HMQ$7=\*$o$C$?8e$Ke(BRB\_GC\_GUARDe$B$rCV$/I,MW$,$”$k$H;W$$$^$9!#e(B

e$B0J2\<$GD\>$k$3$H$r3NG’$7$^$7$?!#e(B

# Index: ext/bigdecimal/bigdecimal.c

— ext/bigdecimal/bigdecimal.c (e$B%j%S%8%g%se(B 27662)  
+++ ext/bigdecimal/bigdecimal.c (e$B:n6H%3%T!\<e(B)  
@@ -2593,7 +2593,7 @@  
int sign=1;  
Real \*vp = NULL;  
U\_LONG mf = VpGetPrecLimit();

- volatile VALUE buf;

- VALUE buf;

- RB\_GC\_GUARD(buf);  
return vp;  
}

---

<div class="post-metadata">

**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\
**Post date:** [May 8, 2010, 4:17am UTC](https://www.ruby-forum.com/t/bug-3258-segmentation-fault-in-bigdecimal-new/188230/2 "2010-05-08T04:17:53Z")

</div>

e$B%A%1%C%He(B #3258 e$B$,99?7$5$l$^$7$?!#e(B (by Nobuyoshi N.)

e$B%9%F!\<%?%9e(B Opene$B$+$ie(BClosede$B$KJQ99e(B  
e$B?JD=e(B % 0e$B$+$ie(B100e$B$KJQ99e(B

This issue was solved with changeset r27665.  
masaya, thank you for reporting this issue.  
Your contribution to Ruby is greatly appreciated.  
May Ruby be with you.

* * *

[http://redmine.ruby-lang.org/issues/show/3258](http://redmine.ruby-lang.org/issues/show/3258)