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[libpng15] Added information about the new limits in the manual.

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Glenn Randers-Pehrson
2012-02-23 23:35:29 -06:00
parent f97ed91ead
commit b27c862b14
4 changed files with 38 additions and 0 deletions
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libpng.3
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@@ -5238,6 +5238,21 @@ PNG_USER_WIDTH_MAX and PNG_USER_HEIGHT_MAX, although this document said
that it could be used to override them. Now this function will reduce or
increase the limits.
Starting in libpng-1.5.10, the user limits can be set en masse with the
configuration option PNG_SAFE_LIMITS. If this option is enabled, then
the limits in pnglibconf.h are ignored and a set of "safe" limits is
applied in pngconf.h. These can be overridden by application calls
to png_set_user_limits(), png_set_user_chunk_cache_max(), and/or
png_set_user_malloc_max() that increase or decrease the limits. Also,
in libpng-1.5.10 the default width and height limits were increased
from 1,000,000 to 0x7ffffff (i.e., made unlimited). Therefore, the
limits are now
default safe
png_user_width_max 0x7fffffff 1,000,000
png_user_height_max 0x7fffffff 1,000,000
png_user_chunk_cache_max 0 (unlimited) 128
png_user_chunk_malloc_max 0 (unlimited) 4,000,000
B. Changes to the build and configuration of libpng
Details of internal changes to the library code can be found in the CHANGES