sim_engine_halt() broken in binutils 2.34

[William Tambe]

I am running GDB with target sim.

Calling sim_engine_halt() triggers the following error:
../../binutils-gdb/gdb/inferior.c:286: internal-error: inferior*
find_inferior_pid(process_stratum_target*, int): Assertion `pid != 0'
failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n)

Any idea idea what changed ?