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Do not recover in "incorrect preprocessor directive"

--- a/cc1/cpp.c

+++ b/cc1/cpp.c

@@ -713,8 +713,10 @@

 	for (bp = clauses; bp->token && bp->token != yytoken; ++bp)

 		/* nothing */;

-	if (!bp->token)

-		error("incorrect preprocessor directive");

+	if (!bp->token) {

+		errorp("incorrect preprocessor directive");

+		goto error;

+	}

 	pushctx();              /* create a new context to avoid polish */

 	(*bp->fun)();           /* the current context, and to get all  */

@@ -723,6 +725,7 @@

 	if (yytoken != EOFTOK && !cppoff)

 		errorp("trailing characters after preprocessor directive");

+error:

 	disexpand = 0;

 	lexmode = CCMODE;

 	namespace = ns;