0004173: Bad memory cleanup of DLL using Thread module

(0003879)
matt (reporter)
2006-12-14 18:39

The new uploaded C file is a little C program that trigs the problem: no need to use LabVIEW.
It was tested under cygwin (makes use or dlopen).
It does core dump only if demo_bug.dll makes use of Thread.

test2.c:
1/ Loads the DLL, then unloads
2/ Loads the DLL, init (calls caml_startup), then unloads
3/ Loads the Dll -> CORE DUMP when init is called

(0007635)
xleroy (administrator)
2012-07-04 19:56

I wonder whether this issue is still there after the changes in otherlibs/systhreads performed in Spring 2010 (commit 10220 in particular). Can anyone confirm or infirm?

(0007649)
matt (reporter)
2012-07-06 20:38

I reproduced the problem this evening, after I:
- installed ocaml using Jonathan Protzenko's 4.00.0-beta2 installer on an fresh XP virtual machine
- compiled http://code.google.com/p/dlfcn-win32/ [^] in order to have dlfcn with the mingw cross compiler, in order for my test2.c test program to work.

But I really don't know if this bug is really important. At least not for me.

Salutations.

(0007708)
frisch (developer)
2012-07-11 13:52

This bug is not new, and nobody seems to be strongly impacted by it. I suggest to remove it from the 4.00 target version.

(0007861)
xleroy (administrator)
2012-08-02 08:48

By the same reasoning, I changed the target from 4.00.1 to 4.01

Issue History
Date Modified	Username	Field	Change
2006-11-28 12:45	matt	New Issue
2006-11-28 12:45	matt	File Added: demo.zip
2006-12-14 18:34	matt	File Added: test2.c
2006-12-14 18:39	matt	Note Added: 0003879
2007-11-10 13:30	xleroy	Status	new => acknowledged
2012-07-04 17:16	doligez	Target Version	=> 4.00.0+dev
2012-07-04 19:56	xleroy	Note Added: 0007635
2012-07-06 20:38	matt	Note Added: 0007649
2012-07-11 13:52	frisch	Note Added: 0007708
2012-07-12 13:56	doligez	Target Version	4.00.0+dev => 4.01.0+dev
2012-07-27 12:50	frisch	Category	OCaml general => OCaml otherlibs
2012-07-31 13:37	doligez	Target Version	4.01.0+dev => 4.00.1+dev
2012-08-02 08:48	xleroy	Note Added: 0007861
2012-08-02 08:48	xleroy	Target Version	4.00.1+dev => 4.01.0+dev

Notes
(0003879) matt (reporter) 2006-12-14 18:39	The new uploaded C file is a little C program that trigs the problem: no need to use LabVIEW. It was tested under cygwin (makes use or dlopen). It does core dump only if demo_bug.dll makes use of Thread. test2.c: 1/ Loads the DLL, then unloads 2/ Loads the DLL, init (calls caml_startup), then unloads 3/ Loads the Dll -> CORE DUMP when init is called

(0007635) xleroy (administrator) 2012-07-04 19:56	I wonder whether this issue is still there after the changes in otherlibs/systhreads performed in Spring 2010 (commit 10220 in particular). Can anyone confirm or infirm?

(0007649) matt (reporter) 2012-07-06 20:38	I reproduced the problem this evening, after I: - installed ocaml using Jonathan Protzenko's 4.00.0-beta2 installer on an fresh XP virtual machine - compiled http://code.google.com/p/dlfcn-win32/ [^] in order to have dlfcn with the mingw cross compiler, in order for my test2.c test program to work. But I really don't know if this bug is really important. At least not for me. Salutations.

(0007708) frisch (developer) 2012-07-11 13:52	This bug is not new, and nobody seems to be strongly impacted by it. I suggest to remove it from the 4.00 target version.

(0007861) xleroy (administrator) 2012-08-02 08:48	By the same reasoning, I changed the target from 4.00.1 to 4.01

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