c/9072: -Wconversion should be split into two distinct flags

[Zack Weinberg]

The following reply was made to PR c/9072; it has been noted by GNATS.

From: Zack Weinberg <zack@codesourcery.com>
To: Segher Boessenkool <segher@koffie.nl>
Cc: 128950@bugs.debian.org,  gcc-patches@gcc.gnu.org, 
 gcc-gnats@gcc.gnu.org,
	  debian-gcc@lists.debian.org
Subject: Re: c/9072: -Wconversion should be split into two distinct flags
Date: Sun, 29 Dec 2002 00:37:58 -0800

 Segher Boessenkool <segher@koffie.nl> writes:
 > Matthias Klose wrote:
 >> It'd be nice if these two behaviors were two controlled via two
 >> separate flags.  The second behavior would have caught a bug I've been
 >> hunting for hours, while the first behavior is very undesirable to me
 >> (and useless since I also compile with -Wstrict-prototypes).
 >
 > I remember having been annoyed by -Wconversion its behaviour, too.  Maybe
 > this patch will do what you want?
 
 I'm very much in favor of making -Wconversion more useful, but is
 there any reason not to shift the argument-type-conversion warnings
 entirely over to -Wtraditional?  Particularly if the warning is
 avoided for prototypes in system headers (so that 'sinf' and the like
 raise no complaints) -- this would, for instance, catch the occasional
 problem we have with arguments of type 'bool' in GCC itself.
 
 Then -Wconversion would be entirely for dubious type conversions on
 assignment.
 
 zw