GNU gdb (Gentoo 7.0 p1) 7.0
Copyright (C) 2009 Free Software Foundation, Inc.
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Reading symbols from /usr/bin/luatex...Reading symbols from /mnt/alt/debug/usr/bin/luatex.debug...done.
(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/bin/luatex 

Program received signal SIGSEGV, Segmentation fault.
0x0004a8dc in init_pdf_pagecalculations (pdf=0x8bebc8) at luatexdir/pdf/pdfpage.c:49
	in luatexdir/pdf/pdfpage.c
(gdb) thread apply all bt full

Thread 1 (process 14604):
#0  0x0004a8dc in init_pdf_pagecalculations (pdf=0x8bebc8)
    at luatexdir/pdf/pdfpage.c:49
        decimal_digits = 4
#1  0x00048ba4 in init_pdf_struct (pdf=0x8bebc8) at luatexdir/pdf/pdfgen.c:107
        __PRETTY_FUNCTION__ = "init_pdf_struct"
#2  0x0005ad80 in initialize () at luatexdir/tex/maincontrol.c:3440
        k = <value optimized out>
        __PRETTY_FUNCTION__ = "initialize"
#3  0x0005a888 in main_initialize () at luatexdir/tex/mainbody.c:384
        bad = 0
#4  0x0005a938 in main_body () at luatexdir/tex/mainbody.c:402
No locals.
#5  0x00038a38 in main (ac=<value optimized out>, av=<value optimized out>)
    at luatexdir/luatex.c:430
No locals.
(gdb) quit
A debugging session is active.

	Inferior 1 [process 14604] will be killed.

Quit anyway? (y or n)