write InplaceableThunk correctly

JuliaDiff · Oct 14, 2020 · cb34c16 · cb34c16
1 parent 49324b5
commit cb34c16
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/rulesets/Base/arraymath.jl b/src/rulesets/Base/arraymath.jl
@@ -111,7 +111,7 @@ end
 
 function rrule(::typeof(-), x::AbstractArray)
     function negation_pullback(ȳ)
-        return NO_FIELDS, InplaceableThunk(@thunk(-ȳ), _subtract!!)
+        return NO_FIELDS, InplaceableThunk(@thunk(-ȳ), ā -> _subtract!!(ā, ȳ))
     end
     return -x, negation_pullback
 end