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Subject: [Bug 207918] C++ ostream operator << broken for unsigned long long
 when using showbase with octal format
Date: Sat, 12 Mar 2016 08:27:14 +0000
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X-Bugzilla-Severity: Affects Many People
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D207918

            Bug ID: 207918
           Summary: C++ ostream operator << broken for unsigned long long
                    when using showbase with octal format
           Product: Base System
           Version: 10.3-BETA2
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: standards
          Assignee: freebsd-standards@FreeBSD.org
          Reporter: dwmcrobb@me.com
                CC: freebsd-amd64@FreeBSD.org
                CC: freebsd-amd64@FreeBSD.org

C++ library issue.

Using showbase with ostreams causes truncation of unsigned long long when
output format is octal.

#include <iostream>
#include <iomanip>

int main(int argc, char *argv[])
{
  std::cout << std::oct;

  std::cout << std::numeric_limits<unsigned long long>::max()
            << '\n';
  std::cout << std::showbase
            << std::numeric_limits<unsigned long long>::max()
            << '\n';
  return 0;
}

Outputs:

1777777777777777777777
0177777777777777777777

Problem exists for 10.3-PRERELEASE r296556 for amd64 as well as 11.0-CURRENT
r292991 for arm.

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