Ctrl-C in interactive morello-purecap session hits assertion and brings down QEMU.

[jacobbramley]

Running ./cheribuild.py run-morello-purecap, then sending SIGINT to end a process inside CheriBSD, results in Qemu crashing:

qemu-system-morello: ../../morello-qemu/target/cheri-common/cheri_utils.h:225: void cap_unseal_entry(cap_register_t *): Assertion `c-
>cr_tag && cap_is_sealed_entry(c) && "Should only be used with sentry capabilities"' failed.

This causes me no end of bother because I use ctrl-c quite often, it seems. It does not happen with FVP.

[arichardson]

@jacobbramley this should be fixed in the qemu-morello-rebased branch. Could you try building that instead? We hope to merge that branch shortly.

[jacobbramley]

Confirmed, that branch seems to work fine. Thanks :-)