dwarf2out.c (loc_descriptor_from_tree): Return 0 for language-specific tree codes.

        * dwarf2out.c (loc_descriptor_from_tree): Return 0 for
        language-specific tree codes.

        * gcc.dg/debug/20030605-1.c: New.

From-SVN: r67505

gcc/ChangeLog

+2003-05-06  Richard Henderson  <rth@redhat.com>
+
+	* dwarf2out.c (loc_descriptor_from_tree): Return 0 for 
+	language-specific tree codes.
+
 2003-06-05  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
 
 	PR middle-end/9986

gcc/dwarf2out.c

@@ -9033,6 +9033,14 @@ loc_descriptor_from_tree (loc, addressp)
       break;
 
     default:
+      /* Leave front-end specific codes as simply unknown.  This comes
+	 up, for instance, with the C STMT_EXPR.  */
+      if ((unsigned int) TREE_CODE (loc)
+          >= (unsigned int) LAST_AND_UNUSED_TREE_CODE)
+	return 0;
+
+      /* Otherwise this is a generic code; we should just lists all of
+	 these explicitly.  Aborting means we forgot one.  */
       abort ();
     }
 

gcc/testsuite/ChangeLog

+2003-06-05  Richard Henderson  <rth@redhat.com>
+
+	* gcc.dg/debug/20030605-1.c: New.
+
 2003-06-04  Mark Mitchell  <mark@codesourcery.com>
 
 	* README.QMTEST: Update.

gcc/testsuite/gcc.dg/debug/20030605-1.c

+/* Verify we don't ICE on statement-expressions.  */
+/* { dg-do compile } */
+
+void foo(void)
+{
+  char buf[({ 4; })];
+}