--- Begin Message ---
Package: libc6
Version: 2.3.6.ds1-13etch4
Severity: normal
*** Please type your report below this line ***
When I call the program below with "a.out libc.so", the output is:
dlopen: /usr/lib/libc.so: invalid ELF header
This is apparently because /usr/lib/libc.so contains the following:
---------------------------
/* GNU ld script
Use the shared library, but some functions are only in
the static library, so try that secondarily. */
OUTPUT_FORMAT(elf64-x86-64)
GROUP ( /lib/libc.so.6 /usr/lib/libc_nonshared.a AS_NEEDED ( /lib/ld-linux-x86-64.so.2 ) )
---------------------------
and while the ordinary linker seems to have no problem with that,
dlopen does not like it. The behaviour I would expect is that dlopen
opens /lib/libc.so.6, which is apparently what the ordinary linker
does.
The program I used is:
---------------------
#include <dlfcn.h>
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char *argv[])
{
void *x = dlopen(argv[1],RTLD_NOW);
if (x == NULL) {
fprintf(stderr,"dlopen: %s\n",dlerror());
exit(1);
}
printf("%p\n",x);
return 0;
}
-----------------------
- anton
-- System Information:
Debian Release: 4.0
APT prefers stable
APT policy: (500, 'stable'), (99, 'testing'), (50, 'unstable')
Architecture: amd64 (x86_64)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.18perfctr-2.6.31
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Versions of packages libc6 depends on:
ii tzdata 2007j-1etch1 Time Zone and Daylight Saving Time
libc6 recommends no packages.
-- no debconf information
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--- Begin Message ---
On Mon, Apr 21, 2008 at 07:06:01PM +0200, Anton Ertl wrote:
> and while the ordinary linker seems to have no problem with that,
> dlopen does not like it. The behaviour I would expect is that dlopen
> opens /lib/libc.so.6, which is apparently what the ordinary linker
> does.
Sorry, this isn't a bug. Open the version with the correct SONAME
specified instead.
--
Daniel Jacobowitz
CodeSourcery
--- End Message ---