PATCH: IA64 linker relaxation bug

["H. J. Lu" <hjl at lucon dot org>]

On Sat, Nov 01, 2003 at 02:37:29AM +0100, Andreas Schwab wrote:
> The testcase at <ftp://ftp.suse.com/pub/people/schwab/ia64-relax.tar.bz2>
> demonstrates a bug in the linker relaxation on ia64:
> 
> $ make
> ld -o temacs temacs.o libncurses.so libm.so libc.so elf-init.oS crtn.o
> elf-init.oS(.text+0x101): In function `__libc_csu_init':
> : relocation truncated to fit: GPREL22 __init_array_start
> make: *** [temacs] Error 1
> 
> The problem is that __init_array_start is changing its value multiple
> times during linking, always alternating between 0x6000000000000430 and
> 0x6000000000004fa0.  There is an LTOFF22X relocation against this symbol,
> and by the time the relaxing pass looks at this relocation the value of
> __init_array_start is 0x6000000000004fa0 which is close enough to the gp
> value.  But the final value happens to be 0x6000000000000430, outside of
> the range of a GPREL22 relocation.
> 

The problem is lang_do_assignments assigns 0x6000000000004fa0 and
lang_size_sections assigns 0x6000000000000430. The final one is
0x6000000000000430.

> This bug is reproducable both with mainline and 2.14 branch.  I think it
> is a side effect of
> <http://sources.redhat.com/ml/binutils/2001-02/msg00304.html>.
> 

I am testing this patch. Does this make any senses?


H.J.

Attachment: ld-final-relax-2.patch
Description: Text document