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Issue #9611, #9015: FileIO.read() clamps the length to INT_MAX on Windows.

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This commit is contained in:
Victor Stinner 2011-07-05 11:31:49 +02:00
parent bb4a747b69
commit c655a726db
2 changed files with 11 additions and 1 deletions
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8
Modules/_io/fileio.c
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@ -664,6 +664,10 @@ fileio_read(fileio *self, PyObject *args)
return fileio_readall(self);
}
#if defined(MS_WIN64) || defined(MS_WINDOWS)
if (size > INT_MAX)
size = INT_MAX;
#endif
bytes = PyBytes_FromStringAndSize(NULL, size);
if (bytes == NULL)
return NULL;
@ -672,7 +676,11 @@ fileio_read(fileio *self, PyObject *args)
if (_PyVerify_fd(self->fd)) {
Py_BEGIN_ALLOW_THREADS
errno = 0;
#if defined(MS_WIN64) || defined(MS_WINDOWS)
n = read(self->fd, ptr, (int)size);
#else
n = read(self->fd, ptr, size);
#endif
Py_END_ALLOW_THREADS
} else
n = -1;