John Bowler 29a6ba01a7 [libpng16] Fixed build warnings (MSVC, GCC, GCC v3). Cygwin GCC with default ...

options declares 'index' as a global, causing a warning if it is used as a
local variable.  GCC 64-bit warns about assigning a (size_t) (unsigned 64-bit)
to an (int) (signed 32-bit).  MSVC, however, warns about using the
unary '-' operator on an unsigned value (even though it is well defined
by ANSI-C to be ~x+1).  The padding calculation was changed to use a
different method.  Removed the tests on png_ptr->pass.

2012-03-03 20:49:03 -06:00

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