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evacuate when allocating anon vars

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This commit is contained in:
Mark Thom
2019-02-24 13:40:58 -07:00
parent 8f9c620a89
commit dc89ed57f2
6 changed files with 15 additions and 10 deletions
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4
src/prolog/codegen.rs
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@@ -158,7 +158,7 @@ impl<'a, TermMarker: Allocator<'a>> CodeGenerator<TermMarker>
{
match subterm {
&Term::AnonVar if is_exposed =>
self.marker.mark_anon_var(Level::Deep, target),
self.marker.mark_anon_var(Level::Deep, term_loc, target),
&Term::AnonVar =>
Self::add_or_increment_void_instr(target),
&Term::Cons(ref cell, _, _) | &Term::Clause(ref cell, _, _, _) => {
@@ -207,7 +207,7 @@ impl<'a, TermMarker: Allocator<'a>> CodeGenerator<TermMarker>
if let GenContext::Head = term_loc {
self.marker.advance_arg();
} else {
self.marker.mark_anon_var(lvl, &mut target);
self.marker.mark_anon_var(lvl, term_loc, &mut target);
},
TermRef::Var(lvl @ Level::Shallow, cell, ref var) if var.as_str() == "!" => {
if self.marker.is_unbound(var.clone()) {