re PR c/79730 (ICE tree check: expected var_decl, have function_decl in…

re PR c/79730 (ICE tree check: expected var_decl, have function_decl in finish_decl, at c/c-decl.c:5063)

	PR c/79730
	* c-decl.c (finish_decl): Check VAR_P.

	* gcc.dg/pr79730.c: New test.

From-SVN: r246578

gcc/c/ChangeLog

+2017-03-29  Marek Polacek  <polacek@redhat.com>
+
+	PR c/79730
+	* c-decl.c (finish_decl): Check VAR_P.
+
 2017-03-27  Jakub Jelinek  <jakub@redhat.com>
 
 	PR middle-end/80162

gcc/c/c-decl.c

@@ -5066,7 +5066,7 @@ finish_decl (tree decl, location_t init_loc, tree init,
 	       when a tentative file-scope definition is seen.
 	       But at end of compilation, do output code for them.  */
 	    DECL_DEFER_OUTPUT (decl) = 1;
-	  if (asmspec && C_DECL_REGISTER (decl))
+	  if (asmspec && VAR_P (decl) && C_DECL_REGISTER (decl))
 	    DECL_HARD_REGISTER (decl) = 1;
 	  rest_of_decl_compilation (decl, true, 0);
 	}

gcc/testsuite/ChangeLog

+2017-03-29  Marek Polacek  <polacek@redhat.com>
+
+	PR c/79730
+	* gcc.dg/pr79730.c: New test.
+
 2017-03-29  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
 
 	PR libgfortran/78670

gcc/testsuite/gcc.dg/pr79730.c

+/* PR c/79730 */
+/* { dg-do compile } */
+/* { dg-options "-std=gnu11" } */
+
+register int x() asm (""); /* { dg-error "invalid storage class" } */
+register float y() asm (""); /* { dg-error "invalid storage class" } */