From: Szabolcs Nagy <nsz@port70.net>
To: musl@lists.openwall.com
Subject: Re: TLS (thread-local storage) support
Date: Sat, 6 Oct 2012 22:39:39 +0200 [thread overview]
Message-ID: <20121006203939.GF24157@port70.net> (raw)
In-Reply-To: <20121006143300.GE24157@port70.net>
* Szabolcs Nagy <nsz@port70.net> [2012-10-06 16:33:01 +0200]:
> should the attached code work with dlopen
> when compiled as a dso?
>
> (i wanted to check if the alignments are ok after a dlopen,
> but i can see how this usage may not be supported)
>
> it seems it dies here in the ctor
a more minimal example:
a.c:
__thread int xx;
int *p;
__attribute__((constructor)) static void init(void)
{
p = &xx;
}
b.c:
#include <dlfcn.h>
void *h;
int main()
{
h = dlopen("./a.so", RTLD_LAZY);
}
compiled as
musl-gcc -shared -fPIC -g -o a.so a.c
musl-gcc -g -o b b.c
./b segfaults in init at p=&xx
next prev parent reply other threads:[~2012-10-06 20:39 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-04 21:13 Rich Felker
2012-10-04 21:29 ` Daniel Cegiełka
2012-10-04 22:36 ` Rich Felker
2012-10-06 8:17 ` Daniel Cegiełka
2012-10-16 21:27 ` boris brezillon
2012-10-16 21:47 ` boris brezillon
2012-10-16 22:09 ` Szabolcs Nagy
2012-10-16 23:16 ` boris brezillon
2012-10-17 10:37 ` Szabolcs Nagy
2012-10-16 23:29 ` Rich Felker
2012-10-16 22:54 ` Rich Felker
2012-10-16 23:39 ` boris brezillon
2012-10-16 23:48 ` Rich Felker
2012-10-17 0:08 ` boris brezillon
2012-10-17 0:42 ` Rich Felker
2012-10-17 1:03 ` boris brezillon
2012-10-17 1:49 ` boris brezillon
2012-10-17 1:58 ` Rich Felker
2012-10-17 7:48 ` musl
2012-10-19 18:39 ` orc
2012-10-19 18:41 ` Rich Felker
2012-10-05 3:04 ` Rich Felker
2012-10-05 17:27 ` Rich Felker
2012-10-06 14:33 ` Szabolcs Nagy
2012-10-06 20:39 ` Szabolcs Nagy [this message]
2012-10-06 20:58 ` Rich Felker
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