tree.c (unsave_expr_1): Don't mess with a TARGET_EXPR that hasn't been expanded.

        * tree.c (unsave_expr_1): Don't mess with a TARGET_EXPR that hasn't
        been expanded.

From-SVN: r32814

1 files changed, 7 insertions, 0 deletions

diff --git a/gcc/tree.c b/gcc/tree.c
index 826327e..f018e9d 100644
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -2605,6 +2605,13 @@ unsave_expr_1 (expr)
       break;
 
     case TARGET_EXPR:
+      /* Don't mess with a TARGET_EXPR that hasn't been expanded.
+         It's OK for this to happen if it was part of a subtree that
+         isn't immediately expanded, such as operand 2 of another
+         TARGET_EXPR.  */
+      if (TREE_OPERAND (expr, 1))
+	break;
+
       TREE_OPERAND (expr, 1) = TREE_OPERAND (expr, 3);
       TREE_OPERAND (expr, 3) = NULL_TREE;
       break;