changeset:   5250:db84c9d41437
tag:         tip
user:        Vin Shelton <acs(a)xemacs.org>
date:        Thu Aug 26 22:45:58 2010 -0400
files:       src/ChangeLog src/glyphs-eimage.c
description:
Apply GIF colormap fix from Adam Sjogren for issues 150 and 713
diff -r d4fae3ebf26a -r db84c9d41437 src/ChangeLog
--- a/src/ChangeLog	Fri Aug 20 13:04:54 2010 +0200
+++ b/src/ChangeLog	Thu Aug 26 22:45:58 2010 -0400
@@ -1,3 +1,9 @@
+2010-08-26  Adam Sjøgren <asjo(a)koldfront.dk>
+
+	* glyphs-eimage.c (gif_instantiate): Try harder to find an
+	appropriate GIF colormap and then flag an error if one can't be
+	found.
+
 2010-08-21  Aidan Kehoe  <kehoea(a)parhasard.net>
 
 	* lread.c (read_escape):
diff -r d4fae3ebf26a -r db84c9d41437 src/glyphs-eimage.c
--- a/src/glyphs-eimage.c	Fri Aug 20 13:04:54 2010 +0200
+++ b/src/glyphs-eimage.c	Thu Aug 26 22:45:58 2010 -0400
@@ -694,7 +694,7 @@
 
   /* 3. Now create the EImage(s) */
   {
-    ColorMapObject *cmo = unwind.giffile->SColorMap;
+    ColorMapObject *cmo = (unwind.giffile->Image.ColorMap ?
unwind.giffile->Image.ColorMap : unwind.giffile->SColorMap);
     int i, j, row, pass, interlace, slice;
     UINT_64_BIT pixels_sq;
     Binbyte *eip;
@@ -702,6 +702,9 @@
        0, 8, 16, ..., 4, 12, 20, ..., 2, 6, 10, ..., 1, 3, 5, ...  */
     static int InterlacedOffset[] = { 0, 4, 2, 1 };
     static int InterlacedJumps[] = { 8, 8, 4, 2 };
+
+    if (cmo == NULL)
+      signal_image_error ("GIF image has no color map", instantiator);
 
     height = unwind.giffile->SHeight;
     width = unwind.giffile->SWidth;
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