[MonetDB-users] Problem with BSS initialisation.
Hello. I've spent quite some time lately debugging my issue with OCaml binding of MonetDB libraries: http://www.mail-archive.com/caml-list@yquem.inria.fr/msg05449.html It seems that the BSS is not properly initialised to 0 when dynamically loaded. It seems that the code in mal_box.c relies on the fact that BSS is initialised to 0 when loaded. I'm still trying to figure out how exactly is the libmonetdb5.so library loaded. This is still an obscure point. ltrace did not provide useful information. Advice welcome. -- Guillaume Yziquel http://yziquel.homelinux.org/
Guillaume Yziquel a écrit :
Hello.
I've spent quite some time lately debugging my issue with OCaml binding of MonetDB libraries:
http://www.mail-archive.com/caml-list@yquem.inria.fr/msg05449.html
It seems that the BSS is not properly initialised to 0 when dynamically loaded. It seems that the code in mal_box.c relies on the fact that BSS is initialised to 0 when loaded.
In fact, this is not the case. It is a symbol collision with libncurses. There's also a box function there, living in the .text data segment. Thanks to Csaba Halasz (Jester01 on ##asm) for helping out with debugging. -- Guillaume Yziquel http://yziquel.homelinux.org/
Guillaume Yziquel wrote:
Guillaume Yziquel a écrit :
Hello.
I've spent quite some time lately debugging my issue with OCaml binding of MonetDB libraries:
http://www.mail-archive.com/caml-list@yquem.inria.fr/msg05449.html
It seems that the BSS is not properly initialised to 0 when dynamically loaded. It seems that the code in mal_box.c relies on the fact that BSS is initialised to 0 when loaded.
In fact, this is not the case. It is a symbol collision with libncurses. There's also a box function there, living in the .text data segment.
Thanks to Csaba Halasz (Jester01 on ##asm) for helping out with debugging. Great find! A patch will be checked into the Feb2010 release branch Thanks. Martin
participants (2)
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Guillaume Yziquel -
Martin Kersten