On 04/08/2016 12:50 AM, Joseph Myers wrote:
> New options need documenting in invoke.texi.
> 
Done.

-- 
Regards,
    Mikhail Maltsev

gcc/c/ChangeLog:

2016-04-08  Mikhail Maltsev  <maltsevm@gmail.com>

	PR c/43651
	* c-decl.c (declspecs_add_qual): Warn when -Wduplicate-decl-specifier
	is enabled.
	* c-errors.c (pedwarn_c90): Return true if warned.
	* c-tree.h: Change return type to bool.

gcc/ChangeLog:

2016-04-08  Mikhail Maltsev  <maltsevm@gmail.com>

	PR c/43651
	* doc/invoke.texi (Wduplicate-decl-specifier): Document new option.

gcc/testsuite/ChangeLog:

2016-04-08  Mikhail Maltsev  <maltsevm@gmail.com>

	PR c/43651
	* gcc.dg/Wduplicate-decl-specifier.c: New test.


gcc/c-family/ChangeLog:

2016-04-08  Mikhail Maltsev  <maltsevm@gmail.com>

	PR c/43651
	* c.opt (Wduplicate-decl-specifier): New option.