[RFC] warning: initialization discards qualifiers from pointer target type

[Devang Patel]

On Apr 18, 2005, at 6:29 PM, James E Wilson wrote:

> 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,

In that case, we can enable it only when -pedantic is used (like many  
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

-
Devang