fix #15934 and #15620 (#15938) [backport:1.4]

* make workaround for #15934 and #15620 * add testcase for #9754
2020-11-15 18:12:53 +01:00 · 2020-11-15 18:12:53 +01:00 · fc735e4b08
commit fc735e4b08
parent 7eb34d170a a86aa31081
3 changed files with 35 additions and 1 deletions
--- a/lib/core/typeinfo.nim
+++ b/lib/core/typeinfo.nim
@ -327,7 +327,10 @@ proc setPointer*(x: Any, y: pointer) =
  ## ``akString``, ``akCString``, ``akProc``, ``akRef``, ``akPtr``,
  ## ``akPointer``, ``akSequence``.
  assert x.rawType.kind in pointerLike
-  genericAssign(x.value, y, x.rawType)
+  if y != nil:
+    genericAssign(x.value, y, x.rawType)
+  else:
+    cast[ppointer](x.value)[] = nil

 proc fieldsAux(p: pointer, n: ptr TNimNode,
               ret: var seq[tuple[name: cstring, any: Any]]) =