weird 'undefined reference to' error

[gnuml]

Hi,

I am trying to compile a C file and link it to a bunch of other files
using gcc, but without success.
The problem is

/tmp/ccRIrJS7.o: In function `pr_writ':
/tmp/ccRIrJS7.o(.text+0x5431): undefined reference to `.L1064'

What is this .L1064? Line 1064? I checked that line but all it contains is
a '}'. Nothing interesting is going on the code, neither is L1064
mentioned anywhere in the files' code.
Can anyone explain to me what this linking error means?
Thanks,

Martin