[Bug 1059783] Re: random output when size_to_str() passed values larger than 10^28

[Colin Watson]

Reproducible with a C++ program linked against libapt-pkg.

#include <apt-pkg/strutl.h>
#include <stdio.h>

void show(double size)
{
    std::string out = SizeToStr(size);
    printf("SizeToStr(%f) = '%s'\n", size, out.c_str());
}

int main()
{
    show(100000000000000000000000000000.0L);
    return 0;
}

** Package changed: python-apt (Ubuntu) => apt (Ubuntu)

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https://bugs.launchpad.net/bugs/1059783

Title:
  random output when size_to_str() passed values larger than 10^28

Status in “apt” package in Ubuntu:
  Confirmed

Bug description:
  # correct output ("10000 Y" or 10k yottabytes)
  $ python2.7 -c 'import apt_pkg; print(apt_pkg.size_to_str(10 ** 28))' |od -xc
  0000000    3031    3030    2030    0a59
            1   0   0   0   0       Y  \n
  0000010

  # incorrect output: random output!
  $ python2.7 -c 'import apt_pkg; print(apt_pkg.size_to_str(10 ** 29))' |od -xc
  0000000    75b0    01ff    8020    b74c    000a
          260   u 377 001     200   L 267  \n
  0000011

  Admittedly, it'll probably be a while before this becomes an issue ;-)

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