Re: Bug#284793: libc6-prof: Running programs compiled with -profile fails

[Daniel Jacobowitz <dan@debian.org>]

On Wed, Dec 08, 2004 at 09:17:39PM +0100, Arno Wagner wrote:
> E ~/exp/c/misc>gcc -profile hello.c 
> E ~/exp/c/misc>a.out
> Inconsistency detected by ld.so: dl-version.c: 230: _dl_check_map_versions: Assertion `needed != ((void *)0)' failed!
> E ~/exp/c/misc>

This has got to be either a GCC or binutils bug.  The link line is:

 /usr/lib/gcc-lib/i486-linux/3.3.5/collect2 --eh-frame-hdr -m elf_i386
 -dynamic-linker /lib/ld-linux.so.2
 /usr/lib/gcc-lib/i486-linux/3.3.5/../../../gcrt1.o
 /usr/lib/gcc-lib/i486-linux/3.3.5/../../../crti.o
 /usr/lib/gcc-lib/i486-linux/3.3.5/crtbegin.o
 -L/usr/lib/gcc-lib/i486-linux/3.3.5
 -L/usr/lib/gcc-lib/i486-linux/3.3.5/../../.. /tmp/ccNEb3Zl.o -lgcc
 --as-needed -lgcc_s --no-as-needed -lc_p -lgcc --as-needed -lgcc_s
 --no-as-needed /usr/lib/gcc-lib/i486-linux/3.3.5/crtend.o
 /usr/lib/gcc-lib/i486-linux/3.3.5/../../../crtn.o

But somehow a.out has a DT_NEEDED entry for libc.so.6.  I see two
problems:

1. It looks like --as-needed -lgcc_s --no-as-needed has somehow dragged in
libc.so.6, even though libgcc_s.so is not needed (and not referenced by
the output).

2. Should GCC add -static automatically to -profile, since libc_p.a is
a static library?  You can't link libc statically to a dynamic
executable.

-- 
Daniel Jacobowitz