join simple test

tests/ccgbugs/t8964.nim

@@ -1,10 +0,0 @@
-discard """
-  targets: "c cpp"
-"""
-
-from json import JsonParsingError
-import marshal
-
-const nothing = ""
-doAssertRaises(JsonParsingError):
-  var bar = marshal.to[int](nothing)

tests/cpp/t8241.nim

@@ -20,4 +20,13 @@ proc findlib2: string =
 proc imported_func2*(a: cint): cstring {.importc, dynlib: findlib2().}
 
 echo imported_func(1)
-echo imported_func2(1)
+echo imported_func2(1)
+
+# issue #8946
+
+from json import JsonParsingError
+import marshal
+
+const nothing = ""
+doAssertRaises(JsonParsingError):
+  var bar = marshal.to[int](nothing)