[PATCH] Separate ignored return type qualifier warning.

["=?big5?b?RG91ZyBLd2FuICjD9q62vHcp?=" <dougkwan at google dot com>]

Hi,

   Could someone review and this?  This patch adds a new warning
options -Wignored-return-type-qualifiers that checks for useless type
qualifiers for scalar and void return types.  Currently this is
included in -Wreturn-type, which also checks for other conditions
involving return types.  The reason why we want this to be a separate
warning is that it is a very common error for C++ programmers to write
code like

   const int foo(....)

The const is nonsensical but it is also harmless.  It would not nice
to be able to turn off this particular kind warning but still check
for other kind of return type issues.

-Doug

Attachment: patch.txt
Description: Text document