John Bowler b45416921b [libpng16] Removed need for -Wno-cast-align with clang. clang correctly warns ...

on alignment increasing pointer casts when -Wcast-align is passed. This
fixes the cases clang warns about either (pngread.c) by eliminating the
casts from png_bytep to png_uint_16p or, for pngrutil.c where the cast
is previously verified or pngstest.c where it is OK by introducing new
png_aligncast macros to do the cast in a way that clang accepts.

2012-04-30 06:31:54 -05:00

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