Unexpected malloc error when looking up DNS

[quentinnuk]

No idea what caused this beyond what the message says.

C-Kermit>take test.ksc
 DNS Lookup... kermit(85829,0x10bceee00) malloc: *** error for object 0x2e00000000000000: pointer being freed was not allocated
kermit(85829,0x10bceee00) malloc: *** set a breakpoint in malloc_error_break to debug
Abort trap: 6

The file test.ksc contents are below, I guess it failed at the set host localhost 4200:

set input echo off
log session test.log
set case off
set output pacing 100
set host localhost 4200
take 00_setup.ksc

Running on macOS 11.7.10 (20G1427), installed with MacPorts. Version info below.

C-Kermit 9.0.302 OPEN SOURCE:, 20 Aug 2011, for macOS 11.0.1 (64-bit)
 Numeric: 900302