Add comment (part of immediately previous commit).

diff --git a/gdb/stack.c b/gdb/stack.c
index 95ecdee4450077ad7bd0ea1f6f90b3418f5c427d..77b7602225db675c3252df3ba12567681f9a5882 100644 (file)
--- a/gdb/stack.c
+++ b/gdb/stack.c
@@ -728,6 +728,11 @@ parse_frame_specification (char *frame_exp)
 
            tmp_cleanup = make_cleanup (xfree, addr_string);
 
+           /* NOTE: we call parse_and_eval and then both
+              value_as_long and value_as_pointer rather than calling
+              parse_and_eval_long and parse_and_eval_address because
+              of the issue of potential side effects from evaluating
+              the expression.  */
            vp = parse_and_eval (addr_string);
            if (numargs == 0)
              level = value_as_long (vp);