* ax-gdb.c (gen_expr): Add UNOP_PLUS case.

	* c-exp.y (exp): Add unary plus.
	* eval.c (evaluate_subexp_standard): Add UNOP_PLUS case.
	* valarith.c (value_x_unop): Add UNOP_PLUS case.
	(value_pos): New.
	* value.h (value_pos): Declare.

	* gdb.cp/userdef.cc (A1::operator+): New unary plus.
	(A2): New class.
	(main): Test operator+.
	* gdb.cp/userdef.exp: Test unary plus.  Use A2::operator+ for
	breakpoint test.

1 files changed, 9 insertions, 0 deletions

diff --git a/gdb/eval.c b/gdb/eval.c
index a25ff46..98f5580 100644
--- a/gdb/eval.c
+++ b/gdb/eval.c
@@ -1855,6 +1855,15 @@ evaluate_subexp_standard (struct type *expect_type,
       evaluate_subexp (NULL_TYPE, exp, pos, noside);
       return evaluate_subexp (NULL_TYPE, exp, pos, noside);
 
+    case UNOP_PLUS:
+      arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
+      if (noside == EVAL_SKIP)
+	goto nosideret;
+      if (unop_user_defined_p (op, arg1))
+	return value_x_unop (arg1, op, noside);
+      else
+	return value_pos (arg1);
+      
     case UNOP_NEG:
       arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
       if (noside == EVAL_SKIP)