On 10/02/2014 02:29 PM, Alexis wrote:

> Breakpoint 1, die (msg=msg@entry=0x664203 "VECTORP (elt)", file=file@entry=0x66b506 "font.c", line=line@entry=2602) at alloc.c:6830
> 6830    {
> (gdb) bt
> #0  die (msg=msg@entry=0x664203 "VECTORP (elt)", file=file@entry=0x66b506 "font.c", line=line@entry=2602) at alloc.c:6830
> #1  0x00000000005b28b1 in font_clear_cache (cache=16514454, driver=driver@entry=0xc7ac80, f=<error reading variable: Unhandled dwarf expression opcode 0xfa>)
>      at font.c:2602
> #2  0x00000000005b9332 in font_finish_cache (driver=0xc7ac80, f=0x129cc28) at font.c:2566

This is an old issue hopefully fixed in trunk (and not in emacs-24 due to an annoying oversight).
Please try this.

Dmitry