tree e2911e6cc7351c0c0b44017a5089c66101daa00c
parent 3fb251b363866417122fe54a158a1ac5a7837101
author Mark Adler <madler@alumni.caltech.edu> 1474521921 -0700
committer Mark Adler <madler@alumni.caltech.edu> 1474523475 -0700

Use post-increment only in inffast.c.

An old inffast.c optimization turns out to not be optimal anymore
with modern compilers, and furthermore was not compliant with the
C standard, for which decrementing a pointer before its allocated
memory is undefined. Per the recommendation of a security audit of
the zlib code by Trail of Bits and TrustInSoft, in support of the
Mozilla Foundation, this "optimization" was removed, in order to
avoid the possibility of undefined behavior.