# \[BUG:trunk\] Array#push with no argument on a frozen array

**URL:** <https://www.ruby-forum.com/t/bug-trunk-array-push-with-no-argument-on-a-frozen-array/155634>\
**Category:** Development\
**Created:** [December 15, 2008, 3:04am UTC](https://www.ruby-forum.com/t/bug-trunk-array-push-with-no-argument-on-a-frozen-array/155634 "2008-12-15T03:04:48Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Yugui\_SYuki\_S.S](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/y/dec6dc/32.png) [@Yugui\_SYuki\_S.S](https://www.ruby-forum.com/u/Yugui_SYuki_S.S)\
**Post date:** [December 15, 2008, 3:04am UTC](https://www.ruby-forum.com/t/bug-trunk-array-push-with-no-argument-on-a-frozen-array/155634/1 "2008-12-15T03:04:48Z")

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Yuguie$B$G$9e(B

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(1.8.7e$B$G$Oe(BTypeError)

[1, 2].freeze.pop(0) #=\> ArgumentError

e$B0lJ}e(BFreezee$B$5$l$?G[Ns$Ke(B0e$B8De(Bpushe$B$7$h$&$H$9$k$H2?$b5/$-$^$;$s!#e(B

[1, 2].freeze.push()

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<div class="post-metadata">

**Author:** ![Yugui\_SYuki\_S.S](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/y/dec6dc/32.png) [@Yugui\_SYuki\_S.S](https://www.ruby-forum.com/u/Yugui_SYuki_S.S)\
**Post date:** [December 15, 2008, 4:16pm UTC](https://www.ruby-forum.com/t/bug-trunk-array-push-with-no-argument-on-a-frozen-array/155634/2 "2008-12-15T16:16:35Z")

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In message “Re: [ruby-dev:37440] [BUG:trunk] Array#push with no argument  
on a frozen array”  
on Mon, 15 Dec 2008 10:56:58 +0900, “Yugui (Yuki S.)”  
[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) writes:

|Freezee$B$5$l$?G[Ns$+$ie(B0e$B8De(Bpope$B$7$h$&$H$9$k$He(BArgumentErrore$B$,H/@8$7$^$9!#e(B  
|(1.8.7e$B$G$Oe(BTypeError)

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1.9e$B$G$Oe(Bfreezee$B$5$l$?%\*%V%8%'%/%He(B  
e$B$NA`:n$Ge(BTypeErrore$B$G$O$J$/e(BRuntimeErrore$B$,=P$^$9!#$3$l$Oe(B1.9e$B$G$Ne(B  
e$B;EMMJQ99!#e(B

|[1, 2].freeze.pop(0) #=\> ArgumentError  
|  
|e$B0lJ}e(BFreezee$B$5$l$?G[Ns$Ke(B0e$B8De(Bpushe$B$7$h$&$H$9$k$H2?$b5/$-$^$;$s!#e(B  
|  
|[1, 2].freeze.push()  
|  
|e$B$3$l$O0U?^$5$l$?$3$H$G$7$g$&$+e(B?

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e$B$,8m2r$O\>/$J$$$G$7$g$&$M!#$I$C$A$,NI$$$H;W$$$^$9!)e(B

```
                            e$B$^$D$b$He(B e$B$f$-$R$me(B /:|)

```

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<div class="post-metadata">

**Author:** ![Yugui\_SYuki\_S.S](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/y/dec6dc/32.png) [@Yugui\_SYuki\_S.S](https://www.ruby-forum.com/u/Yugui_SYuki_S.S)\
**Post date:** [December 17, 2008, 7:58am UTC](https://www.ruby-forum.com/t/bug-trunk-array-push-with-no-argument-on-a-frozen-array/155634/3 "2008-12-17T07:58:18Z")

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e$B%A%1%C%He(B #878 e$B$,99?7$5$l$^$7$?!#e(B (by Yukihiro M.)

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 r20840.

[http://redmine.ruby-lang.org/issues/show/878](http://redmine.ruby-lang.org/issues/show/878)