[PATCH 1/2] s390: Do not replace brcth referencing undefined weak symbol

[Andreas Krebbel]

On 6/26/24 17:20, Jens Remus wrote:
> Branch Relative on Count High (brcth) is a conditional branch relative
> instruction. It is not guaranteed that it only appears within loops
> that sooner or later will take the branch. It may very well be used to
> check a condition that will prevent the branch from ever being taken.
>
> bfd/
> 	* elf64-s390.c (elf_s390_relocate_section): Do not replace brcth
> 	referencing undefined weak symbol with a trap.
>
> ld/
> 	* testsuite/ld-s390/weakundef-1.s: Update test case accordingly.
> 	* testsuite/ld-s390/weakundef-1.dd: Likewise.
>
> Fixes: 896a639babe2 ("s390: Avoid reloc overflows on undefined weak symbols")
> Signed-off-by: Jens Remus <jremus@linux.ibm.com>

Ok. Thanks!


Andreas