bug#21999: 25.0.50; Binary with --enable-checking immediately aborts with '0<=size'

[David Engster]

Eli Zaretskii writes:
>> From: David Engster <deng@randomsample.de>
>> Date: Mon, 23 Nov 2015 20:52:42 +0100
>> 
>
>> I've compiled from the emacs-25 branch (f146ea73a9ca6) with
>> 
>>   CFLAGS="-O0 -g3" ./configure --enable-checking
>> 
>> Running 'emacs -Q' directly from the src directory immediately aborts:
>> 
>>    lisp.h:1543: Emacs fatal error: assertion failed: 0 <= size
>>    Fatal error 6: Aborted
>> 
>> Running 'emacs -nw -Q' runs fine, though.
>> 
>> gdb-Backtrace:
>> 
>> Breakpoint 1, terminate_due_to_signal (sig=6, backtrace_limit=2147483647) at 
>> emacs.c:371
>> 371       signal (sig, SIG_DFL);
>> (gdb) bt
>> #0  terminate_due_to_signal (sig=6, backtrace_limit=2147483647) at 
>> emacs.c:371
>> #1  0x000000000060c908 in die (msg=0x7282e3 "0 <= size", file=0x728188 
>> "lisp.h", line=1543) at alloc.c:7034
>> #2  0x000000000057a983 in ASIZE (array=20941717) at lisp.h:1543
>
> What kind of an object is 'array' in frame #2?

(gdb) xtype
Lisp_Vectorlike
PVEC_FONT

> And what is the value
> of 'size' in the same frame?

(gdb) p size
$9 = -4611686018175729650

-David