# \[BUG\] Stack consistency error (sp: 11, bp: 12)

**URL:** <https://www.ruby-forum.com/t/bug-stack-consistency-error-sp-11-bp-12/112005>\
**Category:** Development\
**Created:** [August 14, 2007, 7:03am UTC](https://www.ruby-forum.com/t/bug-stack-consistency-error-sp-11-bp-12/112005 "2007-08-14T07:03:55Z")\
**Posts on this page:** 4\
**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:** [August 14, 2007, 7:03am UTC](https://www.ruby-forum.com/t/bug-stack-consistency-error-sp-11-bp-12/112005/1 "2007-08-14T07:03:55Z")

</div>

e$B0J2\<$N$h$&$K$9$k$He(B Stack consistency error e$B$K$J$j$^$9!#e(B

% ./ruby -e ’  
class C  
def inspect  
bar {}  
end

## def bar raise ensure end end C.new.foo ’ -e:12:in `method\_missing’-e:4: – control frame ---------- c:0006 p:0008 s:0011 b:0012 l:000011 d:000011 METHOD -e:4 c:0005 p:---- s:0009 b:0009 l:000008 d:000008 FINISH :set\_backtrace c:0004 p:---- s:0007 b:0007 l:000006 d:000006 CFUNC :to\_str c:0003 p:---- s:0005 b:0005 l:000004 d:000004 CFUNC :to\_s c:0002 p:---- s:0003 b:0003 l:000002 d:000002 CFUNC :message c:0001 p:---- s:0001 b:-001 l:000000 d:000000 ------

DBG\> : “:0:in `to_str'" DBG> : ":0:in`to\_s’”  
DBG\> : “:0:in `message’”  
– backtrace of native function call (Use addr2line) –  
0x80f0e4a  
0x810a888  
0x810a927  
0x80eb2d7  
0x80eeb5e  
0x80e685a  
0x805b9c0  
0x805bc42  
0x807716a  
0x805b20e  
0x810b60e  
0x80e6e7f  
0x80e69a6  
0x805b9c0  
0x805bc42  
0x80787d2  
0x807881c  
0x80c61d1  
0x80c7601  
0x810b321  
0x80e6e7f  
0x80e69a6  
0x805b9c0  
0x805bc42  
0x810ae31  
0x80e6e7f  
0x80e69a6  
0x805b9c0  
0x805bc42  
0x8057317  
0x80579a4  
0x8059b13  
0x8059d8b  
0x8056eb5  
0xb7d9aea8  
0x8056de1

---

<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:** [August 14, 2007, 12:56pm UTC](https://www.ruby-forum.com/t/bug-stack-consistency-error-sp-11-bp-12/112005/2 "2007-08-14T12:56:33Z")

</div>

e$B!!$5$5$@$G$9!#e(B

Tanaka A. wrote:

> e$B0J2\<$N$h$&$K$9$k$He(B Stack consistency error e$B$K$J$j$^$9!#e(B

e$B!!D\>$7$^$7$?!#$7$+$7!"$h$/8+$D$1$^$9$M$(!#e(B

e$B!!$3$l$r5!$KNc30$^$o$j$r8+D\>$7$?$s$G$9$,!"$A$g$C$H%3!\<%I$,1x$$$N$G$Je(B  
e$B$s$H$+$7$?$$5$$,$7$^$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:** [August 14, 2007, 1:12pm UTC](https://www.ruby-forum.com/t/bug-stack-consistency-error-sp-11-bp-12/112005/3 "2007-08-14T13:12:42Z")

</div>

In article [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid),  
SASADA Koichi [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) writes:

> > e$B0J2\<$N$h$&$K$9$k$He(B Stack consistency error e$B$K$J$j$^$9!#e(B
> 
> e$B!!D\>$7$^$7$?!#$7$+$7!"$h$/8+$D$1$^$9$M$(!#e(B

test\_exception.rb e$B$K%F%9%H$NDI2C$,$“$j$^$9$,!”$=$N%F%9%H$,%Fe(B  
e$B%9%H$K$J$C$F$$$J$$$h$&$K;W$$$^$9!#e(B

ruby e$B$r8E$$$^$^$K$7$F$=$3$@$1\<B9T$7$F$be(B [BUG] e$B$K$J$j$^$;$s!#e(B

NoMethodError e$B$re(B rescue  
e$B$7$?$i%F%9%H$K$J$i$J$$$N$G$O$J$$$s$8$ce(B  
e$B$J$$$G$7$g$&$+!#e(B

e$B$G$O%F%9%H$r=q$-D\>$=$&$+!“$H;W$C$F9M$($?$N$G$9$,!”$&$^$/$+$1e(B  
e$B$^$;$s!#e(B

% ruby-1.8 -e ’  
class C  
def inspect  
bar {}  
end

def bar  
raise  
ensure  
end  
end  
C.new.foo  
’  
-e:12: undefined method `foo’ for #\<C:0xb7dce9e0\> (NoMethodError)

e$B$H$$$&%a%C%;!\<%8$r%A%‘%C%/$7$h$&$H;W$C$?$N$G$9$,!"e(Bstderr e$B$re(B  
stdout e$B$K0$9$N$Oe(B reopen e$B$G$$$$$H$7$F!"7k2L$H$7$FF@$i$l$ke(B  
"-e:12: undefined method `foo’ for #\<C:0xb7dce9e0\> (NoMethodError)"  
e$B$H$$$&J8;zNs$r3NG’$7$h$&$H;W$C$?$H$3$m$G$O$?$H:$$j$^$7$?!#e(B

bootstraptest/runner.rb e$B$K$Oe(B assert\_equal e$B$7$+$J$$$N$G!"e(B  
#\<C:0xb7dce9e0\> e$B$H$$$&$$$+$K$bKh2sJQ$o$j$=$&$JJ8;zNs$r%A%'%Ce(B  
e$B%/$G$-$^$;$s!#e(B

test/unit e$B$\_$?$$$Ke(B assert\_match e$B$,$“$l$P$$$$$N$G$9$,!”:n$j$^e(B  
e$B$;$s$+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:** [August 14, 2007, 1:23pm UTC](https://www.ruby-forum.com/t/bug-stack-consistency-error-sp-11-bp-12/112005/4 "2007-08-14T13:23:44Z")

</div>

e$B!!$5$5$@$G$9!#e(B

Tanaka A. wrote:

> bootstraptest/runner.rb e$B$K$Oe(B assert\_equal e$B$7$+$J$$$N$G!"e(B  
> #\<C:0xb7dce9e0\> e$B$H$$$&$$$+$K$bKh2sJQ$o$j$=$&$JJ8;zNs$r%A%’%Ce(B  
> e$B%/$G$-$^$;$s!#e(B
> 
> test/unit e$B$\_$?$$$Ke(B assert\_match e$B$,$"$l$P$$$$$N$G$9$,!":n$j$^e(B  
> e$B$;$s$+e(B?

e$B!!$\<$R:n$C$F$/$@$5$$!#$J$s$+B\>$K$bM\_$7$$$b$N$,$"$l$P!"$I$s$I$s!#e(B