C: add fixit hint to misspelled field names

gcc/c/ChangeLog:
	* c-parser.c (c_parser_postfix_expression): In __builtin_offsetof
	and structure element reference, capture the location of the
	element name token and pass it to build_component_ref.
	(c_parser_postfix_expression_after_primary): Likewise for
	structure element dereference.
	(c_parser_omp_variable_list): Likewise for
	OMP_CLAUSE_{_CACHE, MAP, FROM, TO},
	* c-tree.h (build_component_ref): Add location_t param.
	* c-typeck.c (build_component_ref): Add location_t param
	COMPONENT_LOC.  Use it, if available, when issuing hints about
	mispelled member names to provide a fixit replacement hint.

gcc/objc/ChangeLog:
	* objc-act.c (objc_build_component_ref): Update call
	to build_component_ref for added param, passing UNKNOWN_LOCATION.

gcc/testsuite/ChangeLog:
	* gcc.dg/spellcheck-fields-2.c: New test case.

From-SVN: r237176

1 files changed, 2 insertions, 1 deletions

diff --git a/gcc/objc/objc-act.c b/gcc/objc/objc-act.c
index 4856457..44f01d2 100644
--- a/gcc/objc/objc-act.c
+++ b/gcc/objc/objc-act.c
@@ -2654,7 +2654,8 @@ objc_build_component_ref (tree datum, tree component)
   return finish_class_member_access_expr (datum, component, false,
                                           tf_warning_or_error);
 #else
-  return build_component_ref (input_location, datum, component);
+  return build_component_ref (input_location, datum, component,
+			      UNKNOWN_LOCATION);
 #endif
 }