On 9 June 2010 22:35, Joseph S. Myers <joseph@codesourcery.com> wrote:
> On Wed, 9 Jun 2010, Manuel López-Ibáñez wrote:
>
>> note: to be safe all intermediate pointers must be equally qualified
>
> The requirement is not that they be equally qualified, it's that they be
> const-qualified.  (That is, if you are adding "volatile" qualifiers,
> "const" is still needed at intermediate levels; you can convert char ** to
> volatile char *const * but not to volatile char *volatile *.)

Bootstrapped and regression tested on x86_64-linux-gnu. OK for trunk?

2010-06-11  Manuel López-Ibáñez  <manu@gcc.gnu.org>

	* c-typeck.c (handle_warn_cast_qual): Add loc
	parameter. Improve warning message.
	(build_c_cast): Pass location to handle_warn_cast_qual.