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[libpng16] Reverted change of ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED

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to PNG_SET_UNKNOWN_SUPPORTED in pngpread.c; it led to the possibility of
calling png_handle_unknown() twice.
This commit is contained in:
Glenn Randers-Pehrson
2013-11-18 18:40:39 -06:00
parent a7f0bcb3a6
commit bd757acf26
4 changed files with 7 additions and 12 deletions
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6
pngpriv.h
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@@ -1218,7 +1218,7 @@ PNG_INTERNAL_FUNCTION(void,png_read_finish_IDAT,(png_structrp png_ptr),
PNG_INTERNAL_FUNCTION(void,png_read_finish_row,(png_structrp png_ptr),
PNG_EMPTY);
/* Finish a row while reading, dealing with interlacing passes, etc. */
#endif
#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
/* Initialize the row buffers, etc. */
PNG_INTERNAL_FUNCTION(void,png_read_start_row,(png_structrp png_ptr),PNG_EMPTY);
@@ -1472,16 +1472,14 @@ PNG_INTERNAL_FUNCTION(void,png_handle_unknown,(png_structrp png_ptr,
* just skips the chunk or errors out if it is critical.
*/
#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) ||\
defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
PNG_INTERNAL_FUNCTION(int,png_chunk_unknown_handling,
(png_const_structrp png_ptr, png_uint_32 chunk_name),PNG_EMPTY);
/* Exactly as the API png_handle_as_unknown() except that the argument is a
* 32-bit chunk name, not a string.
*/
#endif /* READ_UNKNOWN_CHUNKS || HANDLE_AS_UNKNOWN */
#endif /* PNG_SET_UNKNOWN_CHUNKS_SUPPORTED */
/* Handle the transformations for reading and writing */
#ifdef PNG_READ_TRANSFORMS_SUPPORTED