> The normal function size is smaller than macro version.

The comment and data seem to be in conflict.

master:43255 is less than 'normal function':43275

Am I missing something?

-----Original Message-----
From: Xiang Xiao [mailto:xiaoxiang781...@gmail.com]
Sent: Friday, July 31, 2020 3:19 AM
To: dev@nuttx.apache.org
Subject: RE: [GitHub] [incubator-nuttx] xiaoxiang781216 commented on a
change in pull request #1487: libc: Avoid ctype function to evaluate the
argument more than once

Here is the size report for stm32f103-minimum:nsh:
The master:
   text    data     bss     dec     hex filename
  43255     108    2196   45559    b1f7 nuttx
With lookup table
patch(https://github.com/apache/incubator-nuttx/pull/1487):
   text    data     bss     dec     hex filename
  43567     108    2196   45871    b32f nuttx
With normal function
patch(https://github.com/apache/incubator-nuttx/pull/1496):
   text    data     bss     dec     hex filename
  43275     108    2196   45579    b20b nuttx
The normal function size is smaller than macro version.

> -----Original Message-----
> From: Xiang Xiao <xiaoxiang781...@gmail.com>
> Sent: Friday, July 31, 2020 4:08 PM
> To: dev@nuttx.apache.org
> Subject: RE: [GitHub] [incubator-nuttx] xiaoxiang781216 commented on a
> change in pull request #1487: libc: Avoid ctype function to
> evaluate the argument more than once
>
> Let's restart the problem: it's definitely a bug that ctype macros
> evaluate it's argument more than once. If the code size is more
> important than the speed, let's change all macros to normal function that
> we get the correction behavior and save the code size at the
> same time.
>
> > -----Original Message-----
> > From: David Sidrane <david.sidr...@nscdg.com>
> > Sent: Friday, July 31, 2020 7:32 AM
> > To: dev@nuttx.apache.org
> > Subject: RE: [GitHub] [incubator-nuttx] xiaoxiang781216 commented on a
> > change in pull request #1487: libc: Avoid ctype function to evaluate
> > the argument more than once
> >
> > > Is this something we should be concerned about?
> >
> >
> > Sorry if that came off wrong. I was agreeing with Greg's with the former
> > statement.  Not the latter one.
> >
> > David
> >
> > -----Original Message-----
> > From: Brennan Ashton [mailto:bash...@brennanashton.com]
> > Sent: Thursday, July 30, 2020 12:57 PM
> > To: dev@nuttx.apache.org
> > Subject: Re: [GitHub] [incubator-nuttx] xiaoxiang781216 commented on a
> > change in pull request #1487: libc: Avoid ctype function to evaluate
> > the argument more than once
> >
> > On Thu, Jul 30, 2020, 12:40 PM David Sidrane <david.sidr...@nscdg.com>
> > wrote:
> >
> > > -1 on more bloat
> > >
> >
> > That is not a constructive vote. No one thinks we should have more
> > bloat.
> >
> > The question is do we need to focus more on this. Some of the changes
> > are due to shortcuts we have taken in the past that are now causing
> > issues. The PR that spurred this is exactly this. The code as it exists
> > is wrong in that it has unexpected side effects which is what Xiao
> is trying to address.
> >
> > I will acknowledge that there have been other changes where it was
> > more of a complexity trade-off.  Even on those there was discussion
> > about the impact.
> >
> >
> > > It is a simple matter to see the cost of a PR if we add bloaty
> > > (https://github.com/google/bloaty) to ci.
> > >
> >
> > Great please file the simple PR to add it. This is not trivial as we
> > need to manage the artifacts from previous builds to do the comparison
> > or double the build time. We heard you last time, but
> someone has to do to the actual work.
> >
> > --Brennan

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