Re: [RFC] warning: initialization discards qualifiers from pointertarget type

[James E Wilson <wilson at specifixinc dot com>]

Devang Patel wrote:
>     warning: initialization discards qualifiers from pointer target  type
> This warning can not be disabled using -Wno-cast-qual
> (or any other warning flags). Is it intentional ?

It looks like we have been doing it this way since at least gcc-1.42. 
The same code is there, with no way to disable it, though the wording of 
the message is a little different.  I didn't try looking back any 
farther than that.  This seems rather unlikely to be an accident.

Though of course, this doesn't mean that we can't have an option to 
control it.  -Wno-cast-qual doesn't seem like the right choice, as there 
is no user cast here.  Maybe something like -Wno-discard-qual, where 
-Wdiscard-qual is the default.

I notice that these are pedwarns, not a warning as in the -Wcast-qual 
case, which means that the ISO C standard requires a diagnostic here. 
For this reason, it may not be wise to add an option to disable the 
warnings.  You may lose portability to other compilers.
--
Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com