[Kde-imaging] [Bug 200558] Crash when saving scanned image to .tiff

[Michael G. Hansen]

https://bugs.kde.org/show_bug.cgi?id=200558





--- Comment #16 from Michael G. Hansen <mhansen mghansen de>  2009-07-23 09:55:14 ---
I googled a bit on the offending line in kwriteimage.cpp that caused the
original crash and found this bugreport on libimlib2 including a patch:
http://www.mail-archive.com/debian-bugs-closed@lists.debian.org/msg98527.html

Applying this patch to kwriteimage.cpp and reverting the changes to
scandialog.cpp to pre-998596 fixes the crashes for me (for 8-bit tiff, that is,
as I do not have a way to test 16-bit).

Index: common/libkipiplugins/kpwriteimage.cpp
===================================================================
--- common/libkipiplugins/kpwriteimage.cpp      (revision 998734)
+++ common/libkipiplugins/kpwriteimage.cpp      (working copy)
@@ -533,8 +533,9 @@

     if (d->hasAlpha)
     {
-        TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, 4);
-        TIFFSetField(tif, TIFFTAG_EXTRASAMPLES,    EXTRASAMPLE_ASSOCALPHA);
+        uint16 extras[] = { EXTRASAMPLE_ASSOCALPHA };
+        TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, 4);
+        TIFFSetField(tif, TIFFTAG_EXTRASAMPLES, 1, extras);
     }
     else
     {

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