[multiple changes]

2006-07-14  Andrew Pinski  <pinksia@physics.uc.edu>

        PR c/27490
        PR c/27489
        * c-typeck.c (build_compound_expr): If the second expression
        is an error mark, then just return an error mark instead of
        creating a COMPOUND_EXPR.
2006-08-14  Andrew Pinski  <pinskia@physics.uc.edu>

        PR c/27490
        * gcc.dg/sizeof-2.c: New testcase.

        PR c/27489
        * gcc.dg/switch-A.c: New testcase.

From-SVN: r116148

gcc/ChangeLog

+2006-07-14  Andrew Pinski  <pinksia@physics.uc.edu>
+
+	PR c/27490
+	PR c/27489
+	* c-typeck.c (build_compound_expr): If the second expression
+	is an error mark, then just return an error mark instead of
+	creating a COMPOUND_EXPR.
+
 2006-07-14  Mike Stump  <mrs@apple.com>
 
 	* Makefile.in (LIBGCC_DEPS): Don't depend on LANGUAGES.

gcc/c-typeck.c

@@ -3425,6 +3425,9 @@ build_compound_expr (tree expr1, tree expr2)
   else if (warn_unused_value)
     warn_if_unused_value (expr1, input_location);
 
+  if (expr2 == error_mark_node)
+    return error_mark_node;
+
   return build2 (COMPOUND_EXPR, TREE_TYPE (expr2), expr1, expr2);
 }
 

gcc/testsuite/ChangeLog

+2006-08-14  Andrew Pinski  <pinskia@physics.uc.edu>
+
+	PR c/27490
+	* gcc.dg/sizeof-2.c: New testcase.
+
+	PR c/27489
+	* gcc.dg/switch-A.c: New testcase.
+
 2006-08-14  Steve Ellcey  <sje@cup.hp.com>
 
 	PR c++/28288

gcc/testsuite/gcc.dg/sizeof-2.c

+/* { dg-do compile } */
+
+
+void foo()
+{
+  sizeof(,); /* { dg-error "expected expression before" } */
+}
+

gcc/testsuite/gcc.dg/switch-A.c

+/* { dg-do compile } */
+
+void foo()
+{
+  switch (,) { } /* { dg-error "expected expression before" } */
+}
+