[devel] Restored the PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED guard

around the call to png_flush() after png_write_IEND().  See 1.4.0beta32,
1.4.0beta50 changes above and 1.2.30, 1.2.30rc01 and rc03 in 1.2.41
CHANGES in the libpng_master branch.  Someone needs this feature but
I don't remember who.

ANNOUNCE

 
-Libpng 1.4.0beta103 - November 20, 2009
+Libpng 1.4.0beta103 - November 21, 2009
 
 This is not intended to be a public release.  It will be replaced
 within a few weeks by a public version or by another test version.
@@ -692,8 +692,12 @@ version 1.4.0beta102 [November 18, 2009]
     scripts/README.txt
   Updated the copyright year in scripts/pngwin.rc from 2006 to 2009.
 
-version 1.4.0beta103 [November 20, 2009]
+version 1.4.0beta103 [November 21, 2009]
   Removed obsolete comments about ASM from projects/visualc71/README_zlib.txt
+  Restored the PNG_WRITE_FLUSH_AFTER_IEND guard around the call to png_flush()
+    after png_write_IEND().  See 1.4.0beta32, 1.4.0beta50 changes above
+    and 1.2.30, 1.2.30rc01 and rc03 in 1.2.41 CHANGES.  Someone needs this
+    feature but I don't remember who.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit

CHANGES

@@ -2379,8 +2379,12 @@ version 1.4.0beta102 [November 18, 2009]
     scripts/README.txt
   Updated the copyright year in scripts/pngwin.rc from 2006 to 2009.
 
-version 1.4.0beta103 [November 20, 2009]
+version 1.4.0beta103 [November 21, 2009]
   Removed obsolete comments about ASM from projects/visualc71/README_zlib.txt
+  Restored the PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED guard around the call
+    to png_flush() after png_write_IEND().  See 1.4.0beta32, 1.4.0beta50
+    changes above and 1.2.30, 1.2.30rc01 and rc03 in 1.2.41 CHANGES.  Someone
+    needs this feature but I don't remember who.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit

pngwrite.c

 
 /* pngwrite.c - general routines to write a PNG file
  *
- * Last changed in libpng 1.4.0 [November 20, 2009]
+ * Last changed in libpng 1.4.0 [November 21, 2009]
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -412,11 +412,14 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
    /* This flush, added in libpng-1.0.8, removed from libpng-1.0.9beta03,
     * and restored again in libpng-1.2.30, may cause some applications that
     * do not set png_ptr->output_flush_fn to crash.  If your application
-    * experiences a problem, please report the event to
+    * experiences a problem, please try building libpng with
+    * PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED defined, and report the event to
     * png-mng-implement at lists.sf.net .
     */
 #ifdef PNG_WRITE_FLUSH_SUPPORTED
+#  ifdef PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED
    png_flush(png_ptr);
+#  endif
 #endif
 }