fix

lib/system/repr.nim

@@ -17,7 +17,7 @@ proc reprFloat(x: float): string {.compilerproc.} = return $x
 
 proc reprPointer(x: pointer): string {.compilerproc.} =
   var buf: array[60, char]
-  discard c_sprintf(result[0].addr, "%p", x)
+  discard c_sprintf(buf.cstring, "%p", x)
   result = $buf.cstring
 
 proc `$`(x: uint64): string =

tests/gc/gctest.nim

@@ -31,7 +31,7 @@ type
     of nkList: sons: seq[PCaseNode]
     else: unused: seq[string]
 
-  TIdObj* = object of TObject
+  TIdObj* = object of RootObj
     id*: int  # unique id; use this for comparisons and not the pointers
 
   PIdObj* = ref TIdObj