Imported from libpng-1.0.9beta10.tar

KNOWNBUG

@@ -1,65 +1,9 @@
 
-Known bugs and suggested enhancements in libpng-1.0.8
+Known bugs in libpng-1.0.9
 
-0: November 3, 2000 -- BUG -- incorrect iCCP chunk is written
+1: January 16, 2001 -- BUG -- progressive reading narrow interlaced PNGs
 
-   The compression_type byte in the iCCP chunk written by libpng is
-   usually incorrect.
-
-   Status: Fixed in libpng-1.0.9beta1
-
-1. October 12, 2000 -- BUG -- pngtest fails
-
-   The three WRITEFILE calls in pngtest.c are incorrect.  They must be
-   changed to read
-
-   WRITEFILE((png_FILE_p)png_ptr->io_ptr,  data, length, check);
-   WRITEFILE(io_ptr, near_data, length, check);
-   WRITEFILE(io_ptr, buf, written, err);
-
-2. August 28, 2000 -- BUG -- pnggccrd.c
-
-   The interlacing() function has still not been fully converted and
-   will not compile under gcc-2.95.2; it is currently ifdef'ed out.
-
-   STATUS: Fixed in libpng-1.0.9.  There were also bugs in pngvcrd.c
-   which have been fixed.  The replacement files are available at the
-   PNG web site (http://www.libpng.org/pub/png).
-
-3. March 15, 1998 -- OPTIMIZATION -- Kevin Bracey
-
-   Loops need to be optimized everywhere
-
-   Make them count down instead of up -- Kevin Bracey
-
-   Optimizing compilers don't need this, and making
-   the change would be error prone -- Tom Lane, Glenn R-P
-
-   Question whether i-- or --i is better.
-
-   STATUS: Under investigation, postponed until after
-   libpng-2.0.0.  About 160 loops will be turned around
-   in libpng-2.0.x betaxx, for testing.
-
-4. July 4, 1998 -- ENHANCEMENT -- Glenn R-P
-
-   libpng-1.0.5 and earlier transform colors to gamma=1.0 space for
-   merging with background, and then back to the image's gamma.  The
-   bit_depth of the intermediate (gamma=1.0) representation is probably
-   not sufficient.  In the typical gamma=1/2.2 situation, the linear
-   pixels need about 4 more bits than the gamma-encoded ones, to avoid
-   loss of precision.  A similar situation exists with the rgb_to_gray
-   operation.
-
-   STATUS: under development.
-
-5. September 1999 -- ENHANCEMENT --
-
-   It should be possible to use libpng without floating-point arithmetic.
-
-   STATUS: Under investigation, implementation postponed until after
-   libpng-2.0.0.
-
-   Much of this was completed in libpng-1.0.6, but gamma compensation
-   is not yet done in fixed-point arithmetic.
+   A crash occurs in Mozilla when reading a 2x533 interlaced RGB image.
 
+   Status: Under investigation.  It appears that pngpread.c is not
+   taking care to skip empty passes.