2012-10-29  Manuel López-Ibáñez  <manu@gcc.gnu.org>

	PR c/53066
c/
	* c-decl.c (warn_if_shadowing): Do not warn if a variable
	shadows a function, unless the variable is a function or a
	pointer-to-function.
gcc/
	* tree.h (FUNCTION_POINTER_TYPE_P): New.
testsuite/
	* gcc.dg/Wshadow-4.c: New.
	* gcc.dg/Wshadow-4.h: New.

From-SVN: r192963