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bug#16127: 24.3.50; emacs crashes with macfont_free_entity


From: Stefan Kangas
Subject: bug#16127: 24.3.50; emacs crashes with macfont_free_entity
Date: Fri, 23 Aug 2019 08:13:37 +0200

Alan Third <address@hidden> writes:

> Darren Hoo <address@hidden> writes:
>
>> Bzr revno: 115489 brings this crash:
>>
>>  lldb src/emacs
>> Current executable set to 'src/emacs' (x86_64).
>> (lldb) run
>> Process 17619 launched: '/Volumes/disk/emacs/src/emacs' (x86_64)
>> Process 17619 stopped
>> * thread #1: tid = 0x1f0644, 0x00000001001ac8cb emacs`macfont_free_entity 
>> [inlined] XCDR(c=9053142519906304, obj=9053142519906304, n=0) + 4 at 
>> lisp.h:2007, queue = 'com.apple.main-thread, stop reason = EXC_BAD_ACCESS 
>> (code=EXC_I386_GPFLT)
>>     frame #0: 0x00000001001ac8cb emacs`macfont_free_entity [inlined] 
>> XCDR(c=9053142519906304, obj=9053142519906304, n=0) + 4 at lisp.h:2007
>>    2004    XSAVE_POINTER (Lisp_Object obj, int n)
>>    2005    {
>>    2006      eassert (save_type (XSAVE_VALUE (obj), n) == SAVE_POINTER);
>> -> 2007      return XSAVE_VALUE (obj)->data[n].pointer;
>>    2008    }
>>    2009    INLINE void
>>    2010    set_save_pointer (Lisp_Object obj, int n, void *val)
>> (lldb) bt all
>> * thread #1: tid = 0x1f0644, 0x00000001001ac8cb emacs`macfont_free_entity 
>> [inlined] XCDR(c=9053142519906304, obj=9053142519906304, n=0) + 4 at 
>> lisp.h:2007, queue = 'com.apple.main-thread, stop reason = EXC_BAD_ACCESS 
>> (code=EXC_I386_GPFLT)
>>     frame #0: 0x00000001001ac8cb emacs`macfont_free_entity [inlined] 
>> XCDR(c=9053142519906304, obj=9053142519906304, n=0) + 4 at lisp.h:2007
>>     frame #1: 0x00000001001ac8c7 
>> emacs`macfont_free_entity(entity=4353797322) + 23 at macfont.m:2438
>>     frame #2: 0x000000010010910e emacs`Fgarbage_collect [inlined] 
>> cleanup_vector + 84 at alloc.c:2889
>
> Hi, are you still getting this crash with a more up-to-date Emacs?
>
> If so, are there any steps you take to reproduce it?
>
> Thanks!

No reply in three years.  Since this was already tagged unreproducible,
there doesn't seem to be much chance for further progress here.  I'm
therefore closing this bug report.

Thanks,
Stefan Kangas





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