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compat/zlib: provide deflateBound() shim centrally

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The `deflateBound()` function has only been introduced with zlib 1.2.0.
When linking against a zlib version older than that we thus provide our
own compatibility shim. Move this shim into "compat/zlib.h" so that we
can adapt it based on whether or not we use zlib-ng in a subsequent
commit.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Patrick Steinhardt
2025-01-28 09:41:31 +01:00
committed by Junio C Hamano
parent 41f1a8435a
commit a2dcb69998
2 changed files with 4 additions and 4 deletions
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4
git-zlib.c
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@ -147,10 +147,6 @@ int git_inflate(git_zstream *strm, int flush)
return status;
}
#if defined(NO_DEFLATE_BOUND) || ZLIB_VERNUM < 0x1200
#define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11)
#endif
unsigned long git_deflate_bound(git_zstream *strm, unsigned long size)
{
return deflateBound(&strm->z, size);