* Makefile.in (c-parse.o, c-common.o): Update dependencies.

	* c-common.c: Include diagnostic.h.
	(c_common_finish): New.
	* c-common.h (c_common_finish): New.
	* c-lang.c (LANG_HOOKS_FINISH): Override.
	* c-parse.in: Don't include diagnostic.h.
	(finish_parse): Remove.
	* langhooks.h: Update comments.
	* toplev.c (lang_dependent_init): New prototype.
	(finalize): New.
	(compile_file): Split cleanup code out to finalize.
	(lang_dependent_init): Stop if lang_hooks.init fails.
	(toplev_main): Update.
	* tree.h (finish_parse): Remove.

ada:	* misc.c (gnat_decode_option, gnat_init_options): Make definitions
	static too.
	(gnat_init): Don't return NULL.
	(finish_parse): Remove.
cp:	* lex.c (cxx_finish): Call c_common_finish.
	(finish_parse): Remove.
f:	* com.c (finish_parse): Remove.
	(ffe_finish): Move body of finish_parse.
java:	* lang.c (finish_parse): Rename to java_finish.
	(LANG_HOOKS_FINISH, java_finish): New.
objc:	* objc-act.c (LANG_HOOKS_FINISH): Override.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@47141 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 4 insertions, 1 deletions

diff --git a/gcc/langhooks.h b/gcc/langhooks.h
index 9823dc8797a..0402940a398 100644
--- a/gcc/langhooks.h
+++ b/gcc/langhooks.h
@@ -61,7 +61,10 @@ struct lang_hooks
 
   /* Called after options parsing, to initialize the front end.  The
      main input filename is passed, which may be NULL; the front end
-     should return the original filename (e.g. foo.i -> foo.c).  */
+     should return the original filename (e.g. foo.i -> foo.c).
+     Return NULL to indicate a serious error of some sort; in that
+     case no compilation is performed, and the finish hook is called
+     immediately.  */
   const char * (*init) PARAMS ((const char *));
 
   /* Called last, as a finalizer.  */