diff options
| -rw-r--r-- | compiler/varpartitions.nim | 2 | ||||
| -rw-r--r-- | tests/arc/t18971.nim | 10 |
2 files changed, 11 insertions, 1 deletions
diff --git a/compiler/varpartitions.nim b/compiler/varpartitions.nim index 8f422face..709d00fa0 100644 --- a/compiler/varpartitions.nim +++ b/compiler/varpartitions.nim @@ -479,7 +479,7 @@ proc destMightOwn(c: var Partitions; dest: var VarIndex; n: PNode) = # calls do construct, what we construct must be destroyed, # so dest cannot be a cursor: dest.flags.incl ownsData - elif n.typ.kind in {tyLent, tyVar}: + elif n.typ.kind in {tyLent, tyVar} and n.len > 1: # we know the result is derived from the first argument: var roots: seq[(PSym, int)] allRoots(n[1], roots, RootEscapes) diff --git a/tests/arc/t18971.nim b/tests/arc/t18971.nim new file mode 100644 index 000000000..9b587d956 --- /dev/null +++ b/tests/arc/t18971.nim @@ -0,0 +1,10 @@ +discard """ + cmd: "nim c --gc:arc $file" +""" + +type MyObj = ref object + +var o = MyObj() +proc x: var MyObj = o + +var o2 = x() |