PR c/529
* c-decl.c (warn_if_shadowing): Don't check for PARM_DECL in
nested function declarators.
(pushdecl): Don't call warn_if_shadowing for PARM_DECL.
(grokparms): Call warn_if_shadowing for parameters used within the
parameter list.
(store_parm_decls_newstyle): Call warn_if_shadowing for parameters
not used within the parameter list.
(store_parm_decls_oldstyle): Call warn_if_shadowing for parameters.
testsuite:
* gcc.dg/Wshadow-3.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@102571 138bc75d-0d04-0410-961f-82ee72b054a4