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      1 //===----------------------------------------------------------------------===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is dual licensed under the MIT and the University of Illinois Open
      6 // Source Licenses. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 
     10 // <istream>
     11 
     12 // basic_istream<charT,traits>&
     13 //    ignore(streamsize n = 1, int_type delim = traits::eof());
     14 
     15 // http://llvm.org/bugs/show_bug.cgi?id=16427
     16 
     17 #include <sstream>
     18 #include <cassert>
     19 
     20 int main()
     21 {
     22     int bad=-1;
     23     std::ostringstream os;
     24     os << "aaaabbbb" << static_cast<char>(bad)
     25        << "ccccdddd" << std::endl;
     26     std::string s=os.str();
     27 
     28     std::istringstream is(s);
     29     const unsigned int ignoreLen=10;
     30     size_t a=is.tellg();
     31     is.ignore(ignoreLen);
     32     size_t b=is.tellg();
     33     assert((b-a)==ignoreLen);
     34 }
     35