# Exception \`ArgumentError' at (null):0 - NULL pointer given

**URL:** <https://www.ruby-forum.com/t/exception-argumenterror-at-null-0-null-pointer-given/115385>\
**Category:** Development\
**Created:** [September 24, 2007, 7:31pm UTC](https://www.ruby-forum.com/t/exception-argumenterror-at-null-0-null-pointer-given/115385 "2007-09-24T19:31:00Z")\
**Posts on this page:** 2\
**Page:** 1

<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:** [September 24, 2007, 7:31pm UTC](https://www.ruby-forum.com/t/exception-argumenterror-at-null-0-null-pointer-given/115385/1 "2007-09-24T19:31:00Z")

</div>

e$B0J2\<$r\<B9T$7$Fe(B ^C e$B$G3d$j9~$`$H!"e(BNULL pointer given  
e$B$H$+2x$7e(B  
e$B$2$J%a%C%;!\<%8$,=P$^$9!#e(B

% ./ruby -de ‘set\_trace\_func(proc {}); sleep’  
^CException `Interrupt' at -e:1 - Exception`ArgumentError’ at (null):0 - NULL pointer given  
0Exception `ArgumentError’ at (null):0 - NULL pointer given  
: ArgumentError

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<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:** [September 25, 2007, 2:16pm UTC](https://www.ruby-forum.com/t/exception-argumenterror-at-null-0-null-pointer-given/115385/2 "2007-09-25T14:16:21Z")

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e$B$^$D$b$He(B e$B$f$-$R$m$G$9e(B

In message “Re: [ruby-dev:31849] Exception `ArgumentError’ at (null):0 -  
NULL pointer given”  
on Tue, 25 Sep 2007 02:28:54 +0900, Tanaka A. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
writes:

|e$B0J2\<$r\<B9T$7$Fe(B ^C e$B$G3d$j9~$`$H!"e(BNULL pointer given e$B$H$+2x$7e(B  
|e$B$2$J%a%C%;!\<%8$,=P$^$9!#e(B

rb\_longjmp()e$B$,e(Brb\_sourcefile()e$B$,e(BNULLe$B$rJV$7$?$3$H$KBP1~$7$F$$$Je(B  
e$B$+$C$?$3$H$,e(B"NULL pointer given"e$B$ND\>@$N860x$G$9!#e(B

e$B$7$+$7!“:,K\E\*$K$Oe(Bset\_trace\_funce$B$7$?;~$Ke(Brb\_sourcefile()e$B$,e(B  
NULLe$B$rJV$7$F$7$^$&$3$H$,$^$:$$$N$G!”$3$l$O$3$l$GBP1~$9$kI,MWe(B  
e$B$,$"$j$^$9$M!#$I$&$d$ie(BRubye$B%9%?%C%/$,$J$/$J$C$F$7$^$C$?e(B  
error\_print()e$B$NCf$Ge(Bcall\_trace\_funce$B$,8F$P$l$k$+$i$N$h$&$G$9!#e(B

e$B$H$j$“$($:e(Bfinalizee$B$9$k;~E@$G$Oe(Btrace\_funce$B$r8F$P$J$$$3$H$GBP1~e(B  
e$B$7$^$7$?$,!”$b$7$+$7$?$i0-1F6A$,$"$k$+$b$l$^$;$s!#\<B:]!"e(B  
END{}e$B$NCf$Ge(Btrace\_funce$B$,8F$P$l$J$/$J$C$F$^$9$7!#e(B