Re: Adding Blank Line In Source Causes Change In Executable

From	glen herrmannsfeldt <gah@ugcs.caltech.edu>
Newsgroups	comp.compilers
Subject	Re: Adding Blank Line In Source Causes Change In Executable
Date	2012-03-06 19:51 +0000
Organization	Aioe.org NNTP Server
Message-ID	<12-03-009@comp.compilers> (permalink)
References	<12-03-007@comp.compilers>

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Morris, John M CIV NSWCDD, Q34 <john.m.morris@navy.mil> wrote:

(snip)
> I am not intentionally including debug information in my builds.

Some compilers may generate debugging by default. Others may not
even have an option to turn it off. On many systems, a link-time
option is needed to put the compiler generated debugging data into
the executable, but maybe not all.

> I assumed that blank lines in the source would have no impact on
> the executable, but that appears to be incorrect.

A common debugging feature allows for the printing of statement
numbers in error messages, which means that they have to get into
the executable. The usual optional debugging information, for
example -g in GNU compilers, allows variable names to be included
for debugging. Variable names tend to take up a lot more room
than just statement numbers.

Including source statement numbers does not necessarily follow
the same debugging option, and may even not be optional.

-- glen

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Adding Blank Line In Source Causes Change In Executable "Morris, John M CIV NSWCDD, Q34" <john.m.morris@navy.mil> - 2012-03-06 08:32 -0500
  Re: Adding Blank Line In Source Causes Change In Executable glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-03-06 19:51 +0000
  Re: Adding Blank Line In Source Causes Change In Executable Robert A Duff <bobduff@shell01.TheWorld.com> - 2012-03-06 16:25 -0500
    Re: Adding Blank Line In Source Causes Change In Executable HOKIENERD <hokienerd@gmail.com> - 2012-03-12 07:36 -0700
      Re: Adding Blank Line In Source Causes Change In Executable Robert A Duff <bobduff@shell01.TheWorld.com> - 2012-03-13 09:34 -0400
        Re: Adding Blank Line In Source Causes Change In Executable glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-03-14 05:26 +0000
        Re: Adding Blank Line In Source Causes Change In Executable HOKIENERD <hokienerd@gmail.com> - 2012-03-26 07:33 -0700
          Re: Adding Blank Line In Source Causes Change In Executable Robert A Duff <bobduff@shell01.TheWorld.com> - 2012-03-26 13:36 -0400

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