[nelhage@penguin:~/code/oss-fuzz]$ echo '(<~~) cvx stopped clear' | ~/code/ghostpdl/bin/gs
GPL Ghostscript GIT PRERELEASE 9.25 (2018-09-03)
Copyright (C) 2018 Artifex Software, Inc.  All rights reserved.
This software comes with NO WARRANTY: see the file PUBLIC for details.
GS>=================================================================
==32409==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x62a000557050 at pc 0x0000015389b3 bp 0x7fff148f8e50 sp 0x7fff148f8e48
READ of size 1 at 0x62a000557050 thread T0
    #0 0x15389b2 in gs_scan_token (/home/nelhage/code/ghostpdl/bin/gs+0x15389b2)
    #1 0x151fd67 in gs_interpret (/home/nelhage/code/ghostpdl/bin/gs+0x151fd67)
    #2 0x150218f in gs_main_run_string_with_length (/home/nelhage/code/ghostpdl/bin/gs+0x150218f)
    #3 0x150ab3a in gs_main_run_start (/home/nelhage/code/ghostpdl/bin/gs+0x150ab3a)
    #4 0x58a5d8 in main (/home/nelhage/code/ghostpdl/bin/gs+0x58a5d8)
    #5 0x77fc5cb5d2e0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x202e0)
    #6 0x491799 in _start (/home/nelhage/code/ghostpdl/bin/gs+0x491799)

0x62a000557050 is located 0 bytes to the right of 20048-byte region [0x62a000552200,0x62a000557050)
allocated by thread T0 here:
    #0 0x553508 in __interceptor_malloc (/home/nelhage/code/ghostpdl/bin/gs+0x553508)
    #1 0x10d2c3e in gs_heap_alloc_bytes (/home/nelhage/code/ghostpdl/bin/gs+0x10d2c3e)