# \[Bug:1.9\] trap("INT", "p 1") causes ArgumentError

**URL:** <https://www.ruby-forum.com/t/bug-1-9-trap-int-p-1-causes-argumenterror/143198>\
**Category:** Development\
**Created:** [July 16, 2008, 7:24am UTC](https://www.ruby-forum.com/t/bug-1-9-trap-int-p-1-causes-argumenterror/143198 "2008-07-16T07:24:44Z")\
**Posts on this page:** 2\
**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:** [July 16, 2008, 7:24am UTC](https://www.ruby-forum.com/t/bug-1-9-trap-int-p-1-causes-argumenterror/143198/1 "2008-07-16T07:24:44Z")

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trap(“INT”, “p 1”) e$B$H$9$k$H!"e(BArgumentError e$B$K$J$j$^$9!#e(B

% ./ruby -ve ‘trap(“INT”, “p 1”)’  
ruby 1.9.0 (2008-07-16 revision 18083) [i686-linux]  
-e:1:in `trap': wrong trap - p 1 (ArgumentError) from -e:1:in`’

1.8 e$B$G$O$J$j$^$;$s$7!"e(B1.9 e$B$Ne(B rdoc e$B$r$\_$F$be(B

- Signal.trap( signal, command ) =\> obj

e$B$H$$$&5-=R$,$"$j$^$9!#e(B

---

<div class="post-metadata">

**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:** [July 16, 2008, 11:10am UTC](https://www.ruby-forum.com/t/bug-1-9-trap-int-p-1-causes-argumenterror/143198/2 "2008-07-16T11:10:13Z")

</div>

e$B%A%1%C%He(B #279 e$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

## Applied in changeset r18084.

[http://redmine.ruby-lang.org/issues/show/279](http://redmine.ruby-lang.org/issues/show/279)