123 lines
6.7 KiB
Plaintext
123 lines
6.7 KiB
Plaintext
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Libpng 1.2.6rc3 - August 10, 2004
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This is not intended to be a public release. It will be replaced
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within a few weeks by a public version or by another test version.
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Changes since the last public release (1.2.5):
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Commented out warning about uninitialized mmx_support in pnggccrd.c.
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Changed "IBMCPP__" flag to "__IBMCPP__" in pngconf.h.
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Relocated two more misplaced PNGAPI lines in pngtest.c
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Fixed memory overrun bug in png_do_read_filler() with 16-bit datastreams,
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introduced in version 1.0.2.
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Fixed potential overrun in pngerror.c by using strncpy instead of memcpy.
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Revised makefile.macosx, makefile.dec, makefile.aix, and makefile.32sunu.
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Changed the one instance of "ln -sf" to "ln -f -s" in each Sun makefile.
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Fixed potential overrun in pngerror.c by using strncpy instead of memcpy.
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Added "#!/bin/sh" at the top of configure, for recognition of the
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'x' flag under Cygwin (Cosmin).
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Optimized vacuous tests that silence compiler warnings, in png.c (Cosmin).
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Added support for PNG_USER_CONFIG, in pngconf.h (Cosmin).
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Fixed the special memory handler for Borland C under DOS, in pngmem.c
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(Cosmin).
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Removed some spurious assignments in pngrutil.c (Cosmin).
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Replaced 65536 with 65536L, and 0xffff with 0xffffL, to silence warnings
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on 16-bit platforms (Cosmin).
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Enclosed shift op expressions in parentheses, to silence warnings (Cosmin).
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Used proper type png_fixed_point, to avoid problems on 16-bit platforms,
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in png_handle_sRGB() (Cosmin).
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Added compression_type to png_struct, and optimized the window size
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inside the deflate stream (Cosmin).
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Fixed definition of isnonalpha(), in pngerror.c and pngrutil.c (Cosmin).
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Fixed handling of unknown chunks that come after IDAT (Cosmin).
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Allowed png_error() and png_warning() to work even if png_ptr == NULL
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(Cosmin).
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Replaced row_info->rowbytes with row_bytes in png_write_find_filter()
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(Cosmin).
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Fixed definition of PNG_LIBPNG_VER_DLLNUM (Simon-Pierre).
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Used PNG_LIBPNG_VER and PNG_LIBPNG_VER_STRING instead of the hardcoded
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values in png.c (Simon-Pierre, Cosmin).
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Initialized png_libpng_ver[] with PNG_LIBPNG_VER_STRING (Simon-Pierre).
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Replaced PNG_LIBPNG_VER_MAJOR with PNG_LIBPNG_VER_DLLNUM in png.rc
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(Simon-Pierre).
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Moved the definition of PNG_HEADER_VERSION_STRING near the definitions
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of the other PNG_LIBPNG_VER_... symbols in png.h (Cosmin).
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Relocated #ifndef PNGAPI guards in pngconf.h (Simon-Pierre, Cosmin).
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Updated scripts/makefile.vc(a)win32 (Cosmin).
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Updated the MSVC project (Simon-Pierre, Cosmin).
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Updated the Borland C++ Builder project (Cosmin).
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Avoided access to asm_flags in pngvcrd.c, if PNG_1_0_X is defined (Cosmin).
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Commented out warning about uninitialized mmx_support in pngvcrd.c (Cosmin).
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Removed scripts/makefile.bd32 and scripts/pngdef.pas (Cosmin).
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Added extra guard around inclusion of Turbo C memory headers, in pngconf.h
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(Cosmin).
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Renamed projects/msvc/ to projects/visualc6/, and projects/borland/ to
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projects/cbuilder5/ (Cosmin).
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Moved projects/visualc6/png32ms.def to scripts/pngw32.def,
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and projects/visualc6/png.rc to scripts/pngw32.rc (Cosmin).
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Added projects/visualc6/pngtest.dsp; removed contrib/msvctest/ (Cosmin).
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Updated contrib/visupng/VisualPng.dsp (Cosmin).
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Updated contrib/visupng/cexcept.h to version 2.0.0 (Cosmin).
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Added a separate distribution with "configure" and supporting files (Junichi).
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version 1.2.6rc1 [August 4, 2004]
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Added user ability to change png_size_t via a PNG_SIZE_T macro.
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Added png_sizeof() and png_convert_size() functions.
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Added PNG_SIZE_MAX (maximum value of a png_size_t variable.
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Added check in png_malloc_default() for (size_t)size != (png_uint_32)size
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which would indicate an overflow.
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Changed sPLT failure action from png_error to png_warning and abandon chunk.
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Changed sCAL and iCCP failures from png_error to png_warning and abandon.
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Added png_get_uint_31(png_ptr, buf) function.
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Added PNG_UINT_32_MAX macro.
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Renamed PNG_MAX_UINT to PNG_UINT_31_MAX.
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Made png_zalloc() issue a png_warning and return NULL on potential
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overflow.
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Revised "clobber list" in pnggccrd.c so it will compile under gcc-3.4.
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Revised Borland portion of png_malloc() to return NULL or issue
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png_error() according to setting of PNG_FLAG_MALLOC_NULL_MEM_OK.
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Added PNG_NO_SEQUENTIAL_READ_SUPPORTED macro to conditionally remove
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sequential read support.
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Added some "#if PNG_WRITE_SUPPORTED" blocks.
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#ifdef'ed out some redundancy in png_malloc_default().
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Use png_malloc instead of png_zalloc to allocate the pallete.
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Rearranged order of processing of color types in png_handle_tRNS().
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Added PNG_ROWBYTES macro to calculate rowbytes without integer overflow.
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Updated makefile.darwin and removed makefile.macosx from scripts directory.
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Imposed default one million column, one-million row limits on the image
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dimensions, and added png_set_user_limits() function and
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PNG_SET_USER_LIMITS_SUPPORTED macro to override them.
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Fixed wrong cast of returns from png_get_user_width|height_max().
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Fixed buffer overflow vulnerability in png_handle_tRNS()
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Fixed integer arithmetic overflow vulnerability in png_read_png().
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Fixed some harmless bugs in png_handle_sBIT, etc, that would cause
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duplicate chunk types to go undetected.
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Changed some "keep the compiler happy" from empty statements to returns,
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Revised libpng.txt to remove 1.2.x stuff from the 1.0.x distribution
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version 1.2.6rc2 [August 8, 2004]
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Revised makefile.darwin and makefile.solaris. Removed makefile.macosx.
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Revised pngtest's png_debug_malloc() to use png_malloc() instead of
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png_malloc_default() which is not supposed to be exported.
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Fixed off-by-one error in one of the conversions to PNG_ROWBYTES() in
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pngpread.c. Bug was introduced in 1.2.6rc1.
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Fixed bug in RGB to RGBX transformation introduced in 1.2.6rc1.
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Fixed old bug in RGB to Gray transformation.
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Fixed problem with 64-bit compilers by casting arguments to abs()
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to png_int_32.
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Changed "ln -sf" to "ln -f -s" in three makefiles (solaris, sco, so9).
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Changed "HANDLE_CHUNK_*" to "PNG_HANDLE_CHUNK_*" (Cosmin)
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Added "-@/bin/rm -f $(DL)/$(LIBNAME).so.$(PNGMAJ)" to 15 *NIX makefiles.
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Added code to update the row_info->colortype in png_do_read_filler() (MSB).
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version 1.2.6rc3 [August 10, 2004]
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Eliminated use of "abs()" in testing cHRM and gAMA values, to avoid
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trouble with some 64-bit compilers. Created PNG_OUT_OF_RANGE() macro.
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Revised documentation of png_set_keep_unknown_chunks().
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Check handle_as_unknown status in pngpread.c, as in pngread.c previously.
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Restore "HANDLE_CHUNK_*" macros, but deprecated, for apps that use them.
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Added "rim" definitions for CONST4 and CONST6 in pnggccrd.c
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Send comments/corrections/commendations to
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png-implement@ccrc.wustl.edu or to glennrp@users.sourceforge.net
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Glenn R-P
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