gnuplot 5.5 (last modified in 9.18) on centos linux 7.7.1908
information below from valgrind:
==5049== Memcheck, a memory error detector
==5049== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==5049== Using Valgrind-3.16.1 and LibVEX; rerun with -h for copyright info
==5049== Command: /root/pfuzz-new/p-fuzz/pfcon/programs/gnuplot ./bugs/SEGV_unknown1
==5049==
Sorry, no help for ''@''
gnuplot: unable to open display ''
gnuplot: X11 aborted.
Warning: empty y range [0:0], adjusting to [-1:1]
==5049== Jump to the invalid address stated on the next line
==5049== at 0x7E7E7E7E7E7E7E7E: ???
==5049== by 0x7E7E7E7E7E7E7E7D: ???
==5049== by 0x7E7E7E7E7E7E7E7D: ???
==5049== by 0x7E7E7E7E7E7E7E7D: ???
==5049== by 0x747E7E7E7E7E7E7D: ???
==5049== by 0x303400302E32312B: ???
==5049== Address 0x7e7e7e7e7e7e7e7e is not stack'd, malloc'd or (recently) free'd
==5049==
==5049==
==5049== Process terminating with default action of signal 11 (SIGSEGV)
==5049== Bad permissions for mapped region at address 0x7E7E7E7E7E7E7E7E
==5049== at 0x7E7E7E7E7E7E7E7E: ???
==5049== by 0x7E7E7E7E7E7E7E7D: ???
==5049== by 0x7E7E7E7E7E7E7E7D: ???
==5049== by 0x7E7E7E7E7E7E7E7D: ???
==5049== by 0x747E7E7E7E7E7E7D: ???
==5049== by 0x303400302E32312B: ???
==5049==
==5049== HEAP SUMMARY:
==5049== in use at exit: 1,136,960 bytes in 32,100 blocks
==5049== total heap usage: 34,780 allocs, 2,680 frees, 1,474,224 bytes allocated
==5049==
==5049== LEAK SUMMARY:
==5049== definitely lost: 0 bytes in 0 blocks
==5049== indirectly lost: 0 bytes in 0 blocks
==5049== possibly lost: 0 bytes in 0 blocks
==5049== still reachable: 1,136,960 bytes in 32,100 blocks
==5049== suppressed: 0 bytes in 0 blocks
==5049== Rerun with --leak-check=full to see details of leaked memory
==5049==
==5049== For lists of detected and suppressed errors, rerun with: -s
==5049== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)
bug not present in current source