Subject: Re: dynamic linker/loader problem
To: Christos Zoulas <firstname.lastname@example.org>
From: Rafal Boni <email@example.com>
Date: 03/25/2003 20:09:16
In message <HCBqtD.firstname.lastname@example.org>, you write:
-> In article <7AC1CE18-5F08-11D7-B3B8-000A957650EC@wasabisystems.com>,
-> Jason Thorpe <email@example.com> wrote:
-> >On Tuesday, March 25, 2003, at 12:57 PM, Manuel Bouyer wrote:
-> >> Any idea ?
-> >If nothing else, please file a PR about this problem. There is
-> >apparently another outstanding bug with ld.elf_so on MIPS that causes
-> >tcsh to crash (right, christos?), and I'm not sure a PR has been filed
-> >for that, either.
-> Yes, mips does not resolve symbols properly, and there are 2/3 pr's out
-> about it. the code from libc ends up calling the real malloc and free,
-> where the tcsh code ends up calling the ones provided by tcsh. This
-> used to work... And should be fixed before the release.
PR's 19183, 18657, 20078 (should be closed as dup?)
Agreed that it should be fixed before release... I think the problem is
slightly different than you describe it, but the end-result the same..
Some child routines of tgetent (cgetstr, for example) allocate memory,
which uses the libc malloc (even though bash/tcsh provide their own).
So far, so good, but when the termcap code then *frees* that memory,
it does so using the bash/tcsh free(), which whiles and in some cases
crashes the shell.
-> >I think the one I'm thinking of is actually a regression -- i.e. it
-> >worked fine once, but some recent changes to ld.elf_so broke it.
It's definitely a regression... tcsh was one of the first packages I
built (mmm, being slave to a shell 8-) when I got the IP22 code booting
multi-user and it's worked through various toolchains and tweaks to the
ELF dynamic linker until the last set of changes.
There seems to be another issue in that running a -current kernel makes
the old ld_elf.so fall over. This really sucks when you want to try out
a new kernel, and should probably also be fixed before the next release.
Rafal Boni firstname.lastname@example.org
We are all worms. But I do believe I am a glowworm. -- Winston Churchill