[Bug #943] Segmentation fault (cygwin)

Ruby Development
1

Bug #943: Segmentation fault (cygwin)
http://redmine.ruby-lang.org/issues/show/943

e$B5/I<<Te(B: Martin De$(D+de(Brst
e$B%9%F!<%?%9e(B: Open, e$BM%@hEYe(B: Normal

e$B<!$N%9%/%j%W%H$,e(B Segmentation fault (core dumped)
e$B$G=*$o$j$^$9!#e(B

ruby -e ‘puts “A=[”; 0.upto(1000000) { puts " [22, 55]," }; puts “]”’ |
ruby

[ruby-dev:37611] e$B$GJs9p$7$?LdBj$r4JC12=$7$^$7$?!#LdBj$O:8B&$Ne(B ruby
e$B$N$G$O$J$/!"e(B
e$B1&B&$Ne(B ruby e$B$G5/$3$j$^$9!#e(B

e$B$h$m$7$/$*4j$$$7$^$9!#e(B Martin.

2

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

Martin Du"rst wrote::

e$B<!$N%9%/%j%W%H$,e(B Segmentation fault (core dumped) e$B$G=*$o$j$^$9!#e(B

ruby -e ‘puts “A=[”; 0.upto(1000000) { puts " [22, 55]," }; puts “]”’ | ruby

[ruby-dev:37611] e$B$GJs9p$7$?LdBj$r4JC12=$7$^$7$?!#LdBj$O:8B&$Ne(B ruby e$B$N$G$O$J$/!"e(B
e$B1&B&$Ne(B ruby e$B$G5/$3$j$^$9!#e(B

e$B!!%9%?%C%/%*!<%P!<%U%m!<%A%’%C%/$,B-$j$F$$$^$;$s$G$7$?!%B?J,!$$3$l$GD>$je(B
e$B$^$9!%<j85$G$OD>$j$^$7$?!%e(B[ruby-dev:37611]
e$B$N$[$&$O;n$7$F$$$J$$$N$G$9e(B
e$B$,!$8+$F$b$i$($^$;$s$+!%e(B

Index: vm.c

— vm.c (e$B%j%S%8%g%se(B 21150)
+++ vm.c (e$B:n6H%3%T!<e(B)
@@ -77,6 +77,8 @@ vm_set_top_stack(rb_thread_t * th, VALUE
vm_push_frame(th, iseq, VM_FRAME_MAGIC_TOP,
th->top_self, 0, iseq->iseq_encoded,
th->cfp->sp, 0, iseq->local_size);
+

  •    CHECK_STACK_OVERFLOW(th->cfp, iseq->stack_max);

}

static void
@@ -95,6 +97,8 @@ vm_set_eval_stack(rb_thread_t * th, VALU
if (cref) {
th->cfp->dfp[-1] = (VALUE)cref;
}
+

  • CHECK_STACK_OVERFLOW(th->cfp, iseq->stack_max);
    }

static void
@@ -116,6 +120,8 @@ vm_set_main_stack(rb_thread_t *th, VALUE
if (bind && iseq->local_size > 0) {
bind->env = vm_make_env_object(th, th->cfp);
}
+

  • CHECK_STACK_OVERFLOW(th->cfp, iseq->stack_max);
    }

rb_control_frame_t *

3

e$B%A%1%C%He(B #943 e$B$,99?7$5$l$^$7$?!#e(B (by Koichi Sasada)

e$B%9%F!<%?%9e(B Opene$B$+$ie(BClosede$B$KJQ99e(B
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Applied in changeset r21163.

http://redmine.ruby-lang.org/issues/show/943

4

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

Martin D. wrote::

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5

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At 16:18 08/12/29, SASADA Koichi wrote:

e$B!!%9%?%C%/%*!<%P!<%U%m!<%A%'%C%/$,B-$j$F$$$^$;$s$G$7$?!%B?J,!$$3$l$GD>$je(B
e$B$^$9!%<j85$G$OD>$j$^$7$?!%e(B[ruby-dev:37611] e$B$N$[$&$O;n$7$F$$$J$$$N$G$9e(B
e$B$,!$8+$F$b$i$($^$;$s$+!%e(B

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ruby -e ‘puts “A=[]”; 0.upto(1000000) { puts “A<<[22, 55]” }’ | ruby

e$B$KD>$9$H!";~4V$,$+$+$k$b$N$N!"LdBj$J$/40@.$5$l$^$9!#e(B

e$B$h$m$7$/$*4j$$$7$^$9!#e(B Martin.

}
static void

–
// SASADA Koichi at atdot dot net

#-#-# Martin J. Du"rst, Assoc. Professor, Aoyama Gakuin University
#-#-# http://www.sw.it.aoyama.ac.jp mailto:[email protected]

6

At 17:19 08/12/29, SASADA Koichi wrote:

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

Martin D. wrote::

e$B$7$+$7!"??$CJ?$i$J%G!<%?$rFI$_9~$`$@$1$G%9%?%C%/$,$3$s$J$K?-$S$ke(B
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e$B$h$m$7$/$*4j$$$7$^$9!#e(B Martin.

#-#-# Martin J. Du"rst, Assoc. Professor, Aoyama Gakuin University
#-#-# http://www.sw.it.aoyama.ac.jp mailto:[email protected]