re PR c/18867 (ICE on invalid switch quantity)

        PR c/18867
        * c-typeck.c (c_start_case): Set orig_type to error_mark_node
        when the type of the controlling expression is not a valid type.

testsuite/
        * gcc.dg/noncompile/20041207.c: New test.

From-SVN: r91837

gcc/ChangeLog

 2004-12-07  Steven Bosscher  <stevenb@suse.de>
 
+	PR c/18867
+	* c-typeck.c (c_start_case): Set orig_type to error_mark_node
+	when the type of the controlling expression is not a valid type.
+
+2004-12-07  Steven Bosscher  <stevenb@suse.de>
+
 	PR tree-optimization/17340
 	* tree-ssa-pre.c (compute_antic): Fix comment.
 	(compute_avail): Do not recurse, instead do a DFS using a stack

gcc/c-typeck.c

@@ -6507,6 +6507,7 @@ c_start_case (tree exp)
 	{
 	  error ("switch quantity not an integer");
 	  exp = integer_zero_node;
+	  orig_type = error_mark_node;
 	}
       else
 	{

gcc/testsuite/ChangeLog

+2004-12-07  Steven Bosscher  <stevenb@suse.de>
+
+	* gcc.dg/noncompile/20041207.c: New test.
+
 2004-12-07  Volker Reichelt  <reichelt@gcc.gnu.org>
 
 	* g++.dg/other/unreachable-1.C: New test.

gcc/testsuite/gcc.dg/noncompile/20041207.c

+/* PR18867 - ICE on a switch controlling expressions with an
+   invalid type.  Origin: Serge Belyshev <belyshev@lubercy.com>  */
+   
+void f()
+{
+  float x;
+  switch (x) {case 0: break;}; /* {dg-error "not an integer" } */
+}