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    SubjectRe: 1352 NUL bytes at the end of a page?
    On Mon, May 17, 2004 at 08:22:10AM -0700, Linus Torvalds wrote:
    >
    >
    > On Mon, 17 May 2004, Theodore Ts'o wrote:
    > >
    > > Note though that the stdio library uses a writeable mmap to implement
    > > fwrite.
    >
    > It does? Whee. Then I'll have to agree with Andrew - if there is a path
    > that is more likely to have bugs, it's trying to do writes with mmap and
    > ftruncate.
    >
    > Who came up with that braindead idea? Is it some crazed Mach developer
    > that infiltrated the glibc development group?

    IIRC, that idiocy had been disabled by default (note that it's inherently
    broken, since truncate() between your mmap() and memcpy() will lead to
    a coredump, which is not something fwrite() is allowed to do in such
    situation).

    strace should show if there such mmap calls are made, anyway. Did they
    show up in the traces?
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