correct bug in bb_b_put, correct stack truncation bug resulting in erroneous failures (affecting issue #255 and the in-progress tabling library)

2020-01-19 20:56:11 -07:00
parent 9958ad6f34
commit 6be2d8ccf2
5 changed files with 9 additions and 12 deletions
--- a/src/prolog/machine/system_calls.rs
+++ b/src/prolog/machine/system_calls.rs
@@ -2025,7 +2025,6 @@ impl MachineState {

                        if nb > 0 && self.stack.index_or_frame(b).prelude.b == nb {
                            self.b = self.stack.index_or_frame(nb).prelude.b;
-                            self.truncate_stack();
                        }
                    }
                    _ => self.fail = true,