1 files changed, 34 insertions, 0 deletions
diff --git a/test/std/input.output/iostream.format/input.streams/istream.unformatted/ignore_0xff.pass.cpp b/test/std/input.output/iostream.format/input.streams/istream.unformatted/ignore_0xff.pass.cpp
new file mode 100644
index 000000000000..ccc3545483e7
--- /dev/null
+++ b/test/std/input.output/iostream.format/input.streams/istream.unformatted/ignore_0xff.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// basic_istream<charT,traits>&
+//    ignore(streamsize n = 1, int_type delim = traits::eof());
+
+// http://llvm.org/bugs/show_bug.cgi?id=16427
+
+#include <sstream>
+#include <cassert>
+
+int main()
+{
+    int bad=-1;
+    std::ostringstream os;
+    os << "aaaabbbb" << static_cast<char>(bad) 
+       << "ccccdddd" << std::endl;
+    std::string s=os.str();
+    
+    std::istringstream is(s);
+    const unsigned int ignoreLen=10;
+    size_t a=is.tellg();
+    is.ignore(ignoreLen);
+    size_t b=is.tellg();
+    assert((b-a)==ignoreLen);
+}