# VM::InstructionSequence.load may dump core

**URL:** <https://www.ruby-forum.com/t/vm-instructionsequence-load-may-dump-core/141412>\
**Category:** Development\
**Created:** [June 25, 2008, 4:40pm UTC](https://www.ruby-forum.com/t/vm-instructionsequence-load-may-dump-core/141412 "2008-06-25T16:40:06Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Yusuke\_ENDOH](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/y/c89c15/32.png) [@Yusuke\_ENDOH](https://www.ruby-forum.com/u/Yusuke_ENDOH)\
**Post date:** [June 25, 2008, 4:40pm UTC](https://www.ruby-forum.com/t/vm-instructionsequence-load-may-dump-core/141412/1 "2008-06-25T16:40:06Z")

</div>

e$B1sF#$G$9!#e(B

VM::InstructionSequence.compile e$B$7$?$b$N$re(B to\_a e$B$7$?$b$N$re(B  
load e$B$7$Fe(B eval e$B$9$k$HMn$A$k$3$H$,$"$j$^$9!#e(B

$ ./ruby -e ’  
VM::InstructionSequence.load(  
VM::InstructionSequence.compile(\<\<-SRC).to\_a  
def foo  
begin  
raise  
return  
rescue  
end  
begin  
rescue  
end  
end  
SRC  
).eval  
foo  
’  
:7: [BUG] Stack consistency error (sp: 10, bp: 9)  
ruby 1.9.0 (2008-06-25 revision 17573) [i686-linux]

## – control frame ---------- c:0004 p:0016 s:0010 b:0009 l:000008 d:000008 METHOD :7 c:0003 p:0052 s:0006 b:0006 l:000005 d:000005 TOP -e:16 c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH :private\_class\_method c:0001 p:0000 s:0002 b:0002 l:000001 d:000001 TOP :17

## DBG\> : “:7:in `foo'" DBG> : "-e:16:in`'” – backtrace of native function call (Use addr2line) – 0x8101525 0x812822e 0x812828b 0x80fc09d 0x80fcb0b 0x80fcd00 0x805a03f 0x805b94e 0x8058a01 0xb7e0eea8 0x8058911

e$B%"%!\<%H$7$^$7$?e(B

compile e$B;~$Ke(B ADD\_ADJUST\_RESTORE e$B$,$"$C$?$N$,e(B to\_a  
e$B$N;~E@$Ge(B  
e$B\>C$($F$$$k$?$a!"e(Bload e$B$9$k;~$K%9%?%C%/$N?\<$5$N?dO@$K\<:GT$7!"e(B  
CATCH\_TYPE\_RESCUE e$B$Ne(B sp e$B$,JQ$K$J$k$N$,860x$G$9!#e(B

e$B%"%I%[%C%/$J=$@5$H$7$F$O!“e(BADD\_ADJUST\_RESTORE e$B$re(B ADD\_ADJUST  
e$B$Ke(B  
e$B$9$k$H$+!”?dO@$KMj$i$:%P%$%H%3!\<%I\>e$Ne(B CATCH\_TYPE\_RESCUE e$B$Ne(B  
sp e$B$r:NMQ$9$k$H$+$,9M$($i$l$^$9$,!"e(Biseq\_set\_sequence  
e$B$N?dO@$re(B  
e$B8-$/$9$k$N$,$$$$$+$H;W$$$^$9!#e(B

# e$B$5$5$@$5$s$K$Oe(B IRC e$B$G2?2s$+8@$C$?5$$,$7$^$9$,!"5-O?$K;D$9e(B

# e$B$?$a$K%a!\<%k$7$^$9!#e(B