Comment 3 for bug 1639410

Also, here is last part of the output, but with strace prepended to the command line, notice that clicking Return twice after 'backtrace' did not do anything, even any thing cought by strace

write(2, "sbcl: malloc.c:2372: sysmalloc: "..., 428sbcl: malloc.c:2372: sysmalloc: Assertion `(old_top == (((mbinptr) (((char *) &((av)->bins[((1) - 1) * 2])) - __builtin_offsetof (struct malloc_chunk, fd)))) && old_size == 0) || ((unsigned long) (old_size) >= (unsigned long)((((__builtin_offsetof (struct malloc_chunk, fd_nextsize))+((2 *(sizeof(size_t))) - 1)) & ~((2 *(sizeof(size_t))) - 1))) && ((old_top)->size & 0x1) && ((unsigned long) old_end & pagemask) == 0)' failed.
) = 428
rt_sigprocmask(SIG_UNBLOCK, [ABRT], NULL, 8) = 0
tgkill(1734, 1734, SIGABRT) = 0
--- SIGABRT {si_signo=SIGABRT, si_code=SI_TKILL, si_pid=1734, si_uid=1000} ---
rt_sigprocmask(SIG_BLOCK, NULL, [HUP INT QUIT USR2 PIPE ALRM TERM CHLD TSTP URG XCPU XFSZ VTALRM PROF WINCH IO], 8) = 0
rt_sigprocmask(SIG_BLOCK, [HUP INT QUIT USR2 PIPE ALRM TERM CHLD TSTP URG XCPU XFSZ VTALRM PROF WINCH IO], NULL, 8) = 0
write(2, "fatal error encountered", 23fatal error encountered) = 23
write(2, " in SBCL pid 1734", 17 in SBCL pid 1734) = 17
write(2, "(tid 140737353881408)", 21(tid 140737353881408)) = 21
write(2, ":\n", 2:
) = 2
write(2, "SIGABRT received.\n", 18SIGABRT received.
) = 18
write(2, "\n", 1
) = 1
write(2, "\n", 1
) = 1
write(1, "Welcome to LDB, a low-level debu"..., 71Welcome to LDB, a low-level debugger for the Lisp runtime environment.
) = 71
futex(0x7ffff76ab760, FUTEX_WAIT_PRIVATE, 2, NULLbacktrace

backtrace