removed newString proc again, reverted some unnecesary changes

tests/async/tnewasyncudp.nim

@@ -54,7 +54,7 @@ proc launchSwarm(name: ptr SockAddr) {.async.} =
     k = 0
     while k < messagesToSend:
       zeroMem(addr(buffer[0]), 16384)
-      zeroMem(cast[pointer](addr(saddr)), sizeof(Sockaddr_in))      
+      zeroMem(cast[pointer](addr(saddr)), sizeof(Sockaddr_in))
       var message = "Message " & $(i * messagesToSend + k)
       await sendTo(sock, addr message[0], len(message),
                    name, sizeof(Sockaddr_in).SockLen)
@@ -62,7 +62,7 @@ proc launchSwarm(name: ptr SockAddr) {.async.} =
                                     16384, cast[ptr SockAddr](addr saddr),
                                     addr slen)
       size = 0
-      var grammString = $buffer
+      var grammString = $buffer.cstring
       if grammString == message:
         saveSendingPort(sockport)
         inc(recvCount)
@@ -84,7 +84,7 @@ proc readMessages(server: AsyncFD) {.async.} =
                                   16384, cast[ptr SockAddr](addr(saddr)),
                                   addr(slen))
     size = 0
-    var grammString = $buffer
+    var grammString = $buffer.cstring
     if grammString.startswith("Message ") and
        saddr.sin_addr.s_addr == 0x100007F:
       await sendTo(server, addr grammString[0], len(grammString),

tests/misc/treadx.nim

@@ -6,9 +6,8 @@ when not defined(windows):
   var buf: array[0..10, char]
   while true:
     var r = read(0, addr(buf), sizeof(buf)-1)
-    add inp, $buf
+    add inp, $buf.cstring
     if r != sizeof(buf)-1: break
 
   echo inp
   #dafkladskölklödsaf ölksdakölfölksfklwe4iojr389wr 89uweokf sdlkf jweklr jweflksdj fioewjfsdlfsd
-

tests/system/toString.nim

@@ -13,9 +13,6 @@ inf
 nan
 nil
 nil
-(a: 0, b: nil)
-nil
-ptr (a: 0, b: nil)'''
 """
 
 echo($(@[23, 45]))
@@ -49,12 +46,8 @@ type
     b: string
 
 var foo1: Foo
-var foo2: ref Foo
-var foo3: ptr Foo = foo1.addr
 
-echo foo1
-echo foo2
-echo foo3
+doAssert $foo1 == "(a: 0, b: nil)"
 
 const
   data = @['a','b', '\0', 'c','d']
@@ -67,5 +60,6 @@ import strutils
 # array test
 let arr = ['H','e','l','l','o',' ','W','o','r','l','d','!','\0']
 
+# not sure if this is really a good idea
 doAssert startsWith($arr, "[H, e, l, l, o,  , W, o, r, l, d, !,")
-doAssert newString(arr) == "Hello World!"
+doAssert $arr.cstring == "Hello World!"