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/freebsd-10.0-release/lib/libz/
H A Dzconf.hdiff 52054 Sat Oct 09 09:31:50 MDT 1999 bde Hard-configure z_off_t as long. Soft configuration using HAVE_UNISTD_H
just breaks the prototypes for gzseek() and gztell() when an application
defines HAVE_UNISTD_H before including <zlib.h>. z_off_t was always
long for compiling zlib, but was sometimes off_t for compiling
applications, e.g., Ethereal 0.7.5.

This "fix" preserves bug for bug binary compatibility. z_off_t should
be off_t for everything, but zlib doesn't support off_t being longer
than long, so using the correct type without fixing zlib's internals
would at best break binary compatibility. This "fix" also make the
namespace problems for HAVE_UNISTD_H no worse than hundreds of other
namespace prooblems in zconf.h. I'll wait for a new release of zlib
for proper fixes.

Reported by: Guy Harris via jkh

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