Need for new compiler directives to supress warnings

[Per Bergqvist]

Checked a bit more into this.

The easiest way is probably to use 

-compile({redefine_bif, {size, 1}}).
-compile({redefine_bif, [{spawn, 2}, {spawn, 3}]}).
-compile({use_obsolete, {erlang, hash, 2}}).

This will also allow the use of command line options like

erlc -W +'{redefine_bif, {spawn,2}' foobar.erl

By using a compile declaration only erl_lint.erl needs to be
changed and the options used will be stored in the resulting
beam file.

Attached is a small patch that does this relative 2003-07-25 snapshot.

Comments ?

/Per
 
-------------------
> Fine by me.
> 
> /Per
> -------------------
> > This could pretty easily be added.
> > Although I would suggest a single declaration type
> > for all such "pragmas":
> > 
> > -pragma({redefine, {size,1}}).
> > 
> > -pragma({use_obsolete, {erlang,hash,2}}).
> > 
> >     /Richard
> > 
> > ----- Original Message ----- 
> > From: "Per Bergqvist" <per@REDACTED>
> > To: <erlang-questions@REDACTED>
> > Sent: Saturday, July 26, 2003 7:56 AM
> > Subject: Need for new compiler directives to supress warnings
> > 
> > 
> > > Hi,
> > > 
> > > I think support of some directive to supress specific warnings 
> > > should be added to the compiler/lint in future versions.
> > > 
> > > The two most obvious things I would like to see is:
> > > 1) supression of warning definition of bif.
> > >    this warning is, i guess, the result of the uncertainty of
> scope
> > > rules in the dark ages.
> > >    i would like to be able to:
> > > -redefine_bif([size/1]).
> > > 
> > > 2) supression of warning on use of obsolete functions.
> > >    In some case use of obsolete is absolutely necessary
> > >    like the use of hash for backward compatibility reasons.
> > >    could be something like:
> > > 
> > > -use_obsolete(erlang, [hash/2]).
> > > 
> > > Comments ?
> > > 
> > > /Per
> > > 
> > > =========================================================
> > > Per Bergqvist
> > > Synapse Systems AB
> > > Phone: +46 709 686 685
> > > Email: per@REDACTED
> > > 
> > > 
> > 
> =========================================================
> Per Bergqvist
> Synapse Systems AB
> Phone: +46 709 686 685
> Email: per@REDACTED
> 
=========================================================
Per Bergqvist
Synapse Systems AB
Phone: +46 709 686 685
Email: per@REDACTED
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