From 0ca39dcd330dd2325bf369ace7135a4f8e54b0f6 Mon Sep 17 00:00:00 2001
From: Zahary Karadjov <zahary@gmail.com>
Date: Mon, 25 May 2020 03:57:18 +0300
Subject: [PATCH] Quick fix for using withReadableRange with unsafe inputs

---
 faststreams/inputs.nim | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/faststreams/inputs.nim b/faststreams/inputs.nim
index a38420a..b922ac4 100644
--- a/faststreams/inputs.nim
+++ b/faststreams/inputs.nim
@@ -300,6 +300,7 @@ proc limitReadableRange(s: InputStream, rangeLen: Natural): Natural =
 
   let runway = s.span.len
   if rangeLen > runway:
+    fsAssert s.buffers != nil
     return s.buffers.setFauxEof(rangeLen - runway + s.spanEndPos)
   else:
     s.span.endAddr = offset(s.span.startAddr, rangeLen)
@@ -307,7 +308,7 @@ proc limitReadableRange(s: InputStream, rangeLen: Natural): Natural =
     s.spanEndPos -= bytesToUnconsume
     if s.buffers != nil:
       s.buffers.queue.peekFirst.consumedTo -= bytesToUnconsume
-    return s.buffers.setFauxEof(s.spanEndPos)
+      return s.buffers.setFauxEof(s.spanEndPos)
 
 template withReadableRange*(sp: InputStream|AsyncInputStream,
                             rangeLen: Natural,