* dwarf2out.c (loc_descriptor_from_tree): Return 0 for

        language-specific tree codes.

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


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@67505 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 8 insertions, 0 deletions

diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c
index e64932941ac..dd0ee35b3ca 100644
--- a/gcc/dwarf2out.c
+++ b/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 ();
     }