#2433 SEGV on (mc_malloc_wrappers.c:378)
gnuplot 5.5 (last modified in 9.18) on centos linux 7.7.1908
information below from valgrind:
==5026== Memcheck, a memory error detector
==5026== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==5026== Using Valgrind-3.16.1 and LibVEX; rerun with -h for copyright info
==5026== Command: /root/pfuzz-new/p-fuzz/pfcon/programs/gnuplot ./bugs/SEGV_unknown3
==5026==
gnuplot: unable to open display ''
gnuplot: X11 aborted.
gnuplot: unable to open display ''
gnuplot: X11 aborted.
==5026== Jump to the invalid address stated on the next line
==5026== at 0x132F2F725E7B337E: ???
==5026== by 0x7E7E6873EE656872: ???
==5026== by 0x68735E7B6D7E7E7D: ???
==5026== by 0x2F7B7B7E7E726C64: ???
==5026== by 0x372E372B: ???
==5026== by 0x1FFFFFFFFE: ???
==5026== by 0x1FFEFFE7BF: ???
==5026== by 0x3633000006172F1F: ???
==5026== by 0x650E86F: ???
==5026== by 0x1101: ???
==5026== by 0x5800EAFF: ??? (mc_malloc_wrappers.c:378)
==5026== by 0xB7: ???
==5026== Address 0x132f2f725e7b337e is not stack'd, malloc'd or (recently) free'd
==5026==
==5026==
==5026== Process terminating with default action of signal 11 (SIGSEGV)
==5026== Bad permissions for mapped region at address 0x132F2F725E7B337E
==5026== at 0x132F2F725E7B337E: ???
==5026== by 0x7E7E6873EE656872: ???
==5026== by 0x68735E7B6D7E7E7D: ???
==5026== by 0x2F7B7B7E7E726C64: ???
==5026== by 0x372E372B: ???
==5026== by 0x1FFFFFFFFE: ???
==5026== by 0x1FFEFFE7BF: ???
==5026== by 0x3633000006172F1F: ???
==5026== by 0x650E86F: ???
==5026== by 0x1101: ???
==5026== by 0x5800EAFF: ??? (mc_malloc_wrappers.c:378)
==5026== by 0xB7: ???
==5026==
==5026== HEAP SUMMARY:
==5026== in use at exit: 36,423 bytes in 315 blocks
==5026== total heap usage: 480 allocs, 165 frees, 201,165 bytes allocated
==5026==
==5026== LEAK SUMMARY:
==5026== definitely lost: 0 bytes in 0 blocks
==5026== indirectly lost: 0 bytes in 0 blocks
==5026== possibly lost: 0 bytes in 0 blocks
==5026== still reachable: 36,423 bytes in 315 blocks
==5026== suppressed: 0 bytes in 0 blocks
==5026== Rerun with --leak-check=full to see details of leaked memory
==5026==
==5026== For lists of detected and suppressed errors, rerun with: -s
==5026== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)
bug not present in current source