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Re: integral location_t

From: Per Bothner <per at bothner dot com>
To: Carlo Wood <carlo at alinoe dot com>
Cc: gcc at gcc dot gnu dot org
Date: Wed, 24 Sep 2003 09:12:45 -0700
Subject: Re: integral location_t
References: <20030922061731.GD32436@redhat.com> <3F6EAB39.60202@codesourcery.com> <3F70CBF0.90006@bothner.com> <20030924054331.GC1784@daikokuya.co.uk> <3F7133F3.3000305@bothner.com> <20030924114109.GA28211@alinoe.com>

Carlo Wood wrote:

Assuming we have at least 32 bits, 12 bits of which are
reserved for the column, there are 20 bits for the line
number.


That's not how fileline works ...  The 32 bits of a fileline
are a magic cookie that indexes into a linemap that also
identifies the filename *and* the include nesting.

Currently, fileline does not support column numbers, but
I did once propose an extension for it.  In any case, location_t
does not currently support column numbers either, so adding
column number support is an orthogonal issue.
--
	--Per Bothner
per@bothner.com   http://per.bothner.com/

References:
- integral location_t
  - From: Richard Henderson
- Re: integral location_t
  - From: Nathan Sidwell
- Re: integral location_t
  - From: Per Bothner
- Re: integral location_t
  - From: Neil Booth
- Re: integral location_t
  - From: Per Bothner
- Re: integral location_t
  - From: Carlo Wood

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