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Re: use of register keyword gives undefined reference to `LC0'

From: Jim Wilson <wilson at tuliptree dot org>
To: mark dot a dot robson at jpmorgan dot com
Cc: gcc-bugs at gcc dot gnu dot org
Date: Wed, 25 Jun 2003 12:33:41 -0700
Subject: Re: use of register keyword gives undefined reference to `LC0'
References: <OFE1894BD0.A7B051AA-ON80256D50.00320B32@ny.jpmorgan.com>

mark.a.robson@jpmorgan.com wrote:

[This was originally posted on the cygwin mailing list - I was asked to
post it to gcc-bugs]

Actually, you were pointed at documentation that recommended submitting the bug into bugzilla. Mail to gcc-bugs is likely to be lost, ignored, or misplaced.

gcc -g test.c
/cygdrive/c/TEMP/ccJVVXiI.o(.stab+0x1c4): In function `test':
/support/crbrb.c:11: undefined reference to `LC0'
collect2: ld returned 1 exit status

This is fixed in gcc-3.3.

Removing the 'register' keywork or switching off the debug option 'fixes'
the problem. This bug seems platform specific  eg gcc 3.2 on [intel] linux
works ok.

It depends on the debug info. linux is using dwarf, cygwin is using stabs. You can reproduce it with the linux compiler by using -gstabs instead of -g.

Jim

References:
- use of register keyword gives undefined reference to `LC0'
  - From: mark . a . robson

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