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  1. C++ Standard Library
  2. STDCXX-464

[HP-UX 11.23] std::num_put drops sign from negative long double NaN

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Minor
    • Resolution: Won't Fix
    • Affects Version/s: 4.1.3, 4.2.0
    • Fix Version/s: 4.2.1
    • Component/s: 22. Localization
    • Labels:
      None
    • Environment:

      HP-UX 11.23 and prior

    • Severity:
      Incorrect Behavior

      Description

      On HP-UX 11.23 and prior versions of the OS negative long double NaN is formatted without the minus sign:

      $ uname -sr && cat t.cpp && nice gmake t && ./t
      HP-UX B.11.23
      #include <cassert>
      #include <iostream>
      #include <limits>
      #include <sstream>
      
      int main ()
      {
          std::ostringstream os;
          os << std::numeric_limits<double>::quiet_NaN () << " == "
             << std::numeric_limits<long double>::quiet_NaN () << '\n'
             << -std::numeric_limits<double>::quiet_NaN () << " == "
             << -std::numeric_limits<long double>::quiet_NaN ();
      
          std::cout << os.str () << '\n';
          assert (os.str () == "nan == nan\n-nan == -nan");
      }
      
      aCC -c -I/amd/devco/sebor/stdcxx/include/ansi -I/usr/include  -D_RWSTDDEBUG    -I/amd/devco/sebor/stdcxx/include -I/build/sebor/stdcxx-aCC-3.73-11s/include -I/amd/devco/sebor/stdcxx/examples/include  -Aa +nostl  -g +d  +w +W392 +W655 +W684 +W818 +W819 +W849   t.cpp
      aCC t.o -o t -Aa +nostl -Wl,+s -Wl,+vnocompatwarnings    -L/build/sebor/stdcxx-aCC-3.73-11s/lib  -lstd11s  -lm 
      nan == nan
      -nan == nan
      Assertion failed: os.str () == "nan == nan\n-nan == -nan", file t.cpp, line 15
      ABORT instruction (core dumped)
      

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              • Assignee:
                sebor Martin Sebor
                Reporter:
                sebor Martin Sebor

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                  Updated:
                  Resolved:

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