[Bug #513] Tempfile yields [BUG] Stack consistency error

Ruby Development
1

Bug #513: Tempfile yields [BUG] Stack consistency error
http://redmine.ruby-lang.org/issues/show/513

e$B5/I<<Te(B: Shyouhei U.
e$B%9%F!<%?%9e(B: Open, e$BM%@hEYe(B: Normal
e$BC4Ev<Te(B: Koichi Sasada, e$B%+%F%4%je(B: YARV

zsh % gdb --args ~/target/trunk/bin/ruby -rtempfile -ve
Tempfile.open(“”) do |f|
f.write “\n”;
f.rewind;
g = Tempfile.new “”;
f.each {break};
g.rewind;
end
’
GNU gdb 6.4.90-debian
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This GDB was configured as “x86_64-linux-gnu”…Using host libthread_db
library “/lib/libthread_db.so.1”.

(gdb) run
Starting program: /home/shyouhei/target/trunk/bin/ruby -rtempfile -ve
Tempfile.open("")\ do\ |f|
\ f.write\ "\n";
\ f.rewind;
\ g\ =\ Tempfile.new\ "";
\ f.each\ {break};
\ g.rewind;
end\

[Thread debugging using libthread_db enabled]
[New Thread 47466447361456 (LWP 21474)]
[New Thread 1073756512 (LWP 21477)]
ruby 1.9.0 (2008-08-28 revision 17576) [x86_64-linux]
-e:1: [BUG] Stack consistency error (sp: 16, bp: 15)
ruby 1.9.0 (2008-08-28 revision 17576) [x86_64-linux]

– control frame ----------
c:0005 p:0070 s:0016 b:0015 l:000148 d:0001d8 BLOCK -e:1
c:0004 p:0035 s:0011 b:0011 l:000010 d:000010 METHOD
/home/shyouhei/target/trunk/lib/ruby/1.9.0/tempfile.rb:186
c:0003 p:0017 s:0006 b:0006 l:000148 d:000148 TOP -e:1
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

DBG> : “-e:1:in block in <main>'" DBG> : "/home/shyouhei/target/trunk/lib/ruby/1.9.0/tempfile.rb:186:in open’”
DBG> : “-e:1:in `'”
– backtrace of native function call (Use addr2line) –
0x4f5b51
0x51fa2f
0x51fb1f
0x4ee38f
0x4f2b2d
0x4f3337
0x41682f
0x4168de
0x415007
0x316ca1c4ca
0x414f1a

Program received signal SIGABRT, Aborted.
[Switching to Thread 47466447361456 (LWP 21474)]
0x000000316ca2f07b in raise () from /lib/libc.so.6
(gdb) bt
#0 0x000000316ca2f07b in raise () from /lib/libc.so.6
#1 0x000000316ca3084e in abort () from /lib/libc.so.6
#2 0x000000000051fb24 in rb_bug (fmt=0x564d80 “Stack consistency error
(sp: %ld, bp: %ld)”) at /home/shyouhei/ruby/trunk/error.c:226
#3 0x00000000004ee38f in vm_eval (th=0x6f0110, initial=0) at
/home/shyouhei/ruby/trunk/insns.def:1061
#4 0x00000000004f2b2d in vm_eval_body (th=0x6f0110) at
/home/shyouhei/ruby/trunk/vm.c:1062
#5 0x00000000004f3337 in rb_iseq_eval (iseqval=10262960) at
/home/shyouhei/ruby/trunk/vm.c:1267
#6 0x000000000041682f in ruby_exec_node (n=0x9c99b0, file=0x0) at
/home/shyouhei/ruby/trunk/eval.c:217
#7 0x00000000004168de in ruby_run_node (n=0x9c99b0) at
/home/shyouhei/ruby/trunk/eval.c:245
#8 0x0000000000415007 in main (argc=4, argv=0x7fff05ef52b8) at
/home/shyouhei/ruby/trunk/main.c:34
(gdb)

2

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

2008/08/28 11:18 Shyouhei U. [email protected]:

zsh % gdb --args ~/target/trunk/bin/ruby -rtempfile -ve
Tempfile.open(“”) do |f|
f.write “\n”;
f.rewind;
g = Tempfile.new “”;
f.each {break};
g.rewind;
end
’
(snip)
-e:1: [BUG] Stack consistency error (sp: 16, bp: 15)
(snip)

e$B4JC1$K$G$-$^$7$?!#e(B

$ ./ruby -e ’
class Foo
define_method(:foo) do |&b|
b.call
end
end

Foo.new.foo do
break
end
’
-e:8: [BUG] Stack consistency error (sp: 7, bp: 6)
ruby 1.9.0 (2008-08-28 revision 18895) [i686-linux]

– control frame ----------
c:0003 p:0032 s:0007 b:0006 l:001084 d:001084 TOP -e:8
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> : “-e:8:in `'”
– backtrace of native function call (Use addr2line) –
0x8112df4
0x813e18e
0x813e1d8
0x810bc5f
0x810c3a4
0x810c58c
0x805aa3f
0x805bd46
0x8058e70
0xb7e21ea8
0x8058d51

Aborted

BMETHOD e$BCf$Ge(B throw e$B$9$k2DG=@-$,$"$k$N$G!"e(BBMETHOD
e$B$r8F$S=P$9A0$Ke(B
e$B%9%?%C%/$r=L$a$k$Y$-$+$H;W$$$^$9!#e(B

Index: vm_insnhelper.c

— vm_insnhelper.c (revision 18895)
+++ vm_insnhelper.c (working copy)
@@ -519,8 +519,8 @@
}
case NODE_BMETHOD:{
VALUE *argv = cfp->sp - num;

  • cfp->sp += - num - 1;
    val = vm_call_bmethod(th, id, node->nd_cval, recv, klass, num,
    argv, blockptr);
  • cfp->sp += - num - 1;
    break;
    }
    case NODE_ZSUPER:{
3

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

2008/08/28 21:40 Yukihiro M. [email protected]:

|— vm_insnhelper.c (revision 18895)
|+++ vm_insnhelper.c (working copy)

e$B%3%_%C%H$7$F$/$@$5$$!#e(B

e$B$9$$^$;$s!"$3$N%Q%C%A$@$He(B make test e$B$,DL$j$^$;$s$G$7$?!#e(B
e$B0J2<$N%Q%C%A$Ge(B make test && make test-all e$B$,DL$C$?$N$G!“e(B
e$B$H$j$”$($:%3%%C%H$7$F$*$-$^$9!#e(B

Index: vm_insnhelper.c

— vm_insnhelper.c (revision 18897)
+++ vm_insnhelper.c (working copy)
@@ -519,8 +519,19 @@
}
case NODE_BMETHOD:{
VALUE *argv = cfp->sp - num;

  • val = vm_call_bmethod(th, id, node->nd_cval, recv, klass, num,
    argv, blockptr);
  • int state;
  • TH_PUSH_TAG(th);
  • if ((state = EXEC_TAG()) == 0) {
  •    val = vm_call_bmethod(th, id, node->nd_cval, recv, klass, num,

argv, blockptr);

  • }
  • TH_POP_TAG();
  • cfp->sp += - num - 1;
  • if (state) {
  •    JUMP_TAG(state);
  • }
    break;
    }
    case NODE_ZSUPER:{
4

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

In message “Re: [ruby-dev:36029] Re: [Bug #513] Tempfile yields [BUG]
Stack consistency error”
on Thu, 28 Aug 2008 20:52:05 +0900, “Yusuke ENDOH” [email protected]
writes:

|BMETHOD e$BCf$Ge(B throw e$B$9$k2DG=@-$,$"$k$N$G!"e(BBMETHOD e$B$r8F$S=P$9A0$Ke(B
|e$B%9%?%C%/$r=L$a$k$Y$-$+$H;W$$$^$9!#e(B
|
|Index: vm_insnhelper.c
|===================================================================
|— vm_insnhelper.c (revision 18895)
|+++ vm_insnhelper.c (working copy)

e$B%3%_%C%H$7$F$/$@$5$$!#e(B

5

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

2008/08/28 23:09 Yusuke ENDOH [email protected]:

|
e$B$H$j$“$($:%3%%C%H$7$F$*$-$^$9!#e(B
e$B$H8@$C$?$P$+$j$G$9$,!"$5$5$@$5$s$,$b$&$A$g$C$H6l$7$$?$$$H$Ne(B
e$B$3$H$J$N$G!”%F%9%H$@$1F~$l$k$3$H$K$7$^$9!#e(B

6

e$B%A%1%C%He(B #513 e$B$,99?7$5$l$^$7$?!#e(B (by Koichi Sasada)

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 r18918.

http://redmine.ruby-lang.org/issues/show/513