Re: EXC_BAD_ACCESS on Mac

[Eli Zaretskii]

> Date: Mon, 17 Jun 2013 12:36:14 +0900 (JST)
> From: Kazu Yamamoto (山本和彦) <address@hidden>
> 
> I'm using Emacs HEAD ("24.3.50.1") on Mac. It *often* crashes when I'm
> reading e-mail messages with Mew. I took trace with gdb. The value of
> "glyph" is 0x5bfe and this causes EXC_BAD_ACCESS.

The value of 'glyph' is a pointer to a structure, so this value is
meaningless.  The contents of that structure might be interesting,
though.

> If other information is necessary to fix this bug, please let me know.
> 
> Program received signal EXC_BAD_ACCESS, Could not access memory.
> Reason: 13 at address: 0x0000000000000000
> 0x000000010001b317 in get_glyph_face_and_encoding (f=0x10c408758, 
> glyph=0x5bfe, char2b=0x7fff5fbfb790, two_byte_p=0x7fff5fbfb754) at 
> xdisp.c:22544
> 22544         code = face->font->driver->encode_char (face->font, 
> glyph->u.ch);

The most important information is which pointer in the above line is a
null pointer.  I suspect it's face->font, but please check and tell
which is it.