Core was generated by `(squid-1) --kid squid-1 --foreground -f /etc/squid/squid.conf'.
Program terminated with signal SIGABRT, Aborted.
#0  __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, no_tid=no_tid@entry=0)
    at pthread_kill.c:44
44	      return INTERNAL_SYSCALL_ERROR_P (ret) ? INTERNAL_SYSCALL_ERRNO (ret) : 0;
(gdb) bt
#0  __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, no_tid=no_tid@entry=0)
    at pthread_kill.c:44
#1  0x00007fc6f04a15b3 in __pthread_kill_internal (signo=6, threadid=<optimized out>) at pthread_kill.c:78
#2  0x00007fc6f0454d06 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26
#3  0x00007fc6f04287f3 in __GI_abort () at abort.c:79
#4  0x000055f4aeab0d6d in xassert (msg=<optimized out>, file=<optimized out>, line=<optimized out>)
    at /usr/src/debug/squid-5.5-6.el9_3.2.x86_64/src/debug.cc:624
#5  0x000055f4aec47278 in peerDigestHandleReply (data=0x55f4b171cbe8, receivedData=...)
    at /usr/src/debug/squid-5.5-6.el9_3.2.x86_64/src/peer_digest.cc:419
#6  0x000055f4aec69f16 in store_client::finishCallback (this=0x55f4b171e118)
    at /usr/src/debug/squid-5.5-6.el9_3.2.x86_64/src/store_client.cc:196
#7  0x000055f4aed4d54b in AsyncCallQueue::fireNext (this=<optimized out>) at base/../../src/base/RefCount.h:73
#8  0x000055f4aed4d8da in AsyncCallQueue::fire (this=0x55f4b1708580) at base/AsyncCallQueue.cc:43
#9  0x000055f4aeb31931 in EventLoop::dispatchCalls (this=0x7ffdd2504f60)
    at /usr/src/debug/squid-5.5-6.el9_3.2.x86_64/src/EventLoop.cc:144
#10 EventLoop::runOnce (this=0x7ffdd2504f60) at /usr/src/debug/squid-5.5-6.el9_3.2.x86_64/src/EventLoop.cc:121
#11 0x000055f4aec34d48 in EventLoop::run (this=0x7ffdd2504f60)
    at /usr/src/debug/squid-5.5-6.el9_3.2.x86_64/src/EventLoop.cc:83
#12 SquidMain (argc=<optimized out>, argv=<optimized out>)
    at /usr/src/debug/squid-5.5-6.el9_3.2.x86_64/src/main.cc:1716
#13 0x000055f4aead6856 in SquidMainSafe (argv=0x7ffdd2505278, argc=6)
    at /usr/src/debug/squid-5.5-6.el9_3.2.x86_64/src/main.cc:1403
#14 main (argc=6, argv=0x7ffdd2505278) at /usr/src/debug/squid-5.5-6.el9_3.2.x86_64/src/main.cc:1391
(gdb) f 5
#5  0x000055f4aec47278 in peerDigestHandleReply (data=0x55f4b171cbe8, receivedData=...)
    at /usr/src/debug/squid-5.5-6.el9_3.2.x86_64/src/peer_digest.cc:419
419	    assert(fetch->pd && receivedData.data);
(gdb) p fetch->pd
$1 = (PeerDigest *) 0x55f4b111de98
(gdb) p receivedData
$2 = {flags = {error = <optimized out>}, length = 0, offset = <optimized out>, data = 0x0}