From ee717d8c440d2cdc9e249cf8ebaa5e285ce450ae Mon Sep 17 00:00:00 2001
From: Howard Hinnant <hhinnant@apple.com>
Date: Thu, 20 Dec 2012 15:40:28 +0000
Subject: [PATCH] Hyeon-Bin Jeong:  readsome() need to reset gcount to zero. 
 This fixes http://llvm.org/bugs/show_bug.cgi?id=14670.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@170703 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/istream | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/istream b/include/istream
index dc1c52be6..3979e1407 100644
--- a/include/istream
+++ b/include/istream
@@ -1243,6 +1243,7 @@ template<class _CharT, class _Traits>
 streamsize
 basic_istream<_CharT, _Traits>::readsome(char_type* __s, streamsize __n)
 {
+    __gc_ = 0;
     streamsize __c = this->rdbuf()->in_avail();
     switch (__c)
     {