Forum: Ruby-core [ruby-trunk - Bug #7507][Open] lazy.map{}.zip{} causes SEGV

Issue #7507 has been reported by yhara (Yutaka HARA).

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Bug #7507: lazy.map{}.zip{} causes SEGV
https://bugs.ruby-lang.org/issues/7507

Author: yhara (Yutaka HARA)
Status: Open
Priority: Normal
Assignee:
Category: core
Target version: 2.0.0
ruby -v: ruby 2.0.0dev (2012-12-04 trunk 38172) [x86_64-darwin12.2.1]


The following program causes SEGV. (Tested on Mac and Ubuntu)

  (1..10000).lazy.map{}.zip(){}

---
/Users/yhara/r/ruby % ./miniruby -e '(1..10000).lazy.map{}.zip(){}'
-e:1: [BUG] Segmentation fault
ruby 2.0.0dev (2012-12-04 trunk 38172) [x86_64-darwin12.2.1]

-- Control frame information 
-----------------------------------------------
c:0015 p:---- s:0031 e:000030 IFUNC
c:0014 p:---- s:0029 e:000028 IFUNC
c:0013 p:---- s:0027 e:000026 CFUNC  :yield
c:0012 p:---- s:0025 e:000024 IFUNC
c:0011 p:---- s:0023 e:000022 CFUNC  :each
c:0010 p:---- s:0021 e:000020 IFUNC
c:0009 p:---- s:0019 e:002020 CFUNC  :each
c:0008 p:---- s:0017 e:000016 CFUNC  :each
c:0007 p:---- s:0015 e:001f70 IFUNC
c:0006 p:---- s:0013 e:001eb0 CFUNC  :each
c:0005 p:---- s:0011 e:000010 CFUNC  :each
c:0004 p:---- s:0009 e:001e00 CFUNC  :zip
c:0003 p:---- s:0007 e:000006 CFUNC  :zip
c:0002 p:0012 s:0004 e:001928 EVAL   -e:1 [FINISH]
c:0001 p:0000 s:0002 e:001468 TOP    [FINISH]

-e:1:in `<main>'
-e:1:in `zip'
-e:1:in `zip'
-e:1:in `each'
-e:1:in `each'
-e:1:in `each'
-e:1:in `each'
-e:1:in `each'
-e:1:in `yield'
(snip)
---

Issue #7507 has been updated by nobu (Nobuyoshi Nakada).


Seems a GC issue.

With GC.stress=true, just (1..2) segfaults.
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Bug #7507: lazy.map{}.zip{} causes SEGV
https://bugs.ruby-lang.org/issues/7507#change-34395

Author: yhara (Yutaka HARA)
Status: Open
Priority: Normal
Assignee:
Category: core
Target version: 2.0.0
ruby -v: ruby 2.0.0dev (2012-12-04 trunk 38172) [x86_64-darwin12.2.1]


The following program causes SEGV. (Tested on Mac and Ubuntu)

  (1..10000).lazy.map{}.zip(){}

---
/Users/yhara/r/ruby % ./miniruby -e '(1..10000).lazy.map{}.zip(){}'
-e:1: [BUG] Segmentation fault
ruby 2.0.0dev (2012-12-04 trunk 38172) [x86_64-darwin12.2.1]

-- Control frame information 
-----------------------------------------------
c:0015 p:---- s:0031 e:000030 IFUNC
c:0014 p:---- s:0029 e:000028 IFUNC
c:0013 p:---- s:0027 e:000026 CFUNC  :yield
c:0012 p:---- s:0025 e:000024 IFUNC
c:0011 p:---- s:0023 e:000022 CFUNC  :each
c:0010 p:---- s:0021 e:000020 IFUNC
c:0009 p:---- s:0019 e:002020 CFUNC  :each
c:0008 p:---- s:0017 e:000016 CFUNC  :each
c:0007 p:---- s:0015 e:001f70 IFUNC
c:0006 p:---- s:0013 e:001eb0 CFUNC  :each
c:0005 p:---- s:0011 e:000010 CFUNC  :each
c:0004 p:---- s:0009 e:001e00 CFUNC  :zip
c:0003 p:---- s:0007 e:000006 CFUNC  :zip
c:0002 p:0012 s:0004 e:001928 EVAL   -e:1 [FINISH]
c:0001 p:0000 s:0002 e:001468 TOP    [FINISH]

-e:1:in `<main>'
-e:1:in `zip'
-e:1:in `zip'
-e:1:in `each'
-e:1:in `each'
-e:1:in `each'
-e:1:in `each'
-e:1:in `each'
-e:1:in `yield'
(snip)
---