[PATCH] Fix printf_unknown and do_positional (BZ #4514)

[Ulrich Drepper]

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I applied the patch.

> Also, wonder if we shouldn't compute the sum of allocaed memory sizes
> within whole *printf and use it for __libc_use_alloca instead of testing
> sizes separately.  Or don't throw away the so far largest work buffer
> allocated through alloca, but instead reuse it if it is big enough.

Ideally this should be done, yes.

- --
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖
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