[Bug gdb/31507] [gdb, aarch64] FAIL: gdb.arch/disp-step-insn-reloc.exp: can_relocate_adr_forward: relocated instruction

["vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=31507

--- Comment #6 from Tom de Vries <vries at gcc dot gnu.org> ---
OK, so this hits the "PC did not move. Discarding PC adjustment" case:
...
Breakpoint 5, pass () at
/home/linux/gdb/src/gdb/testsuite/gdb.arch/insn-reloc.c:31
31      }
+x /i $pc
=> 0xaaaaaaaa0894 <pass>:       nop
+continue
[displaced] displaced_step_prepare_throw: displaced-stepping 1307111.1307111.0
now
[displaced] displaced_step_prepare_throw: original insn 0xaaaaaaaa0894: 1f 20
03 d5      nop
[displaced] prepare: selected buffer at 0xaaaaaaaa0788
[displaced] prepare: saved 0xaaaaaaaa0788: 1e 00 80 d2
[displaced] aarch64_displaced_step_copy_insn: writing insn d503201f at
0xaaaaaaaa0788
[displaced] displaced_step_prepare_throw: prepared successfully
thread=1307111.1307111.0, original_pc=0xaaaaaaaa0894,
displaced_pc=0xaaaaaaaa0788
[displaced] displaced_step_prepare_throw: replacement insn 0xaaaaaaaa0788: 1f
20 03 d5   nop
[displaced] finish: restored 1307111.1307111.0 0xaaaaaaaa0788
[displaced] aarch64_displaced_step_fixup: PC after stepping: 0xaaaaaaaa0788
(was 0xaaaaaaaa0788).
[displaced] aarch64_displaced_step_fixup: adjusting PC by 4
[displaced] aarch64_displaced_step_fixup: PC did not move. Discarding PC
adjustment.
[displaced] aarch64_displaced_step_fixup: fixup: set PC to 0xaaaaaaaa0894:0

Breakpoint 5, pass () at
/home/linux/gdb/src/gdb/testsuite/gdb.arch/insn-reloc.c:31
31      }
+x /i $pc
=> 0xaaaaaaaa0894 <pass>:       nop
...

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