Add test for Fax3 decoding issues (refs #513)

Author: rouault

test/CMakeLists.txt

@@ -47,7 +47,8 @@ set(TIFFIMAGES
     images/quad-lzw-compat.tiff
     images/lzw-single-strip.tiff
     images/testfax4.tiff
-    images/testfax3_bug_513.tiff)
+    images/testfax3_bug_513.tiff
+)
 # TIFF images using old-jpeg.  Unused unless JPEG support is enabled.
 set(TIFFIMAGES_OJPEG)
 

test/Makefile.am

@@ -170,7 +170,7 @@ REFFILES = \
 	refs/o-tiff2ps-PS2.ps \
 	refs/o-tiff2ps-PS3.ps \
 	refs/o-testfax4.tiff \
-	refs/o-testfax3_bug_513.sh.tiff \
+	refs/o-testfax3_bug_513.tiff \
 	refs/o-deflate-last-strip-extra-data.tiff
 
 # This list should contain all of the TIFF files in the 'images'

test/images/testfax3_bug_513.tiff

@@ -0,0 +1,24 @@
+#!/bin/sh
+#
+# check decoding of a CCITT Group 3 encoded TIFF
+# hitting https://gitlab.com/libtiff/libtiff/-/issues/513
+. ${srcdir:-.}/common.sh
+infile="${IMAGES}/testfax3_bug_513.tiff"
+outfile="o-testfax3_bug_513.tiff"
+rm -f $outfile
+echo "$MEMCHECK ${TIFFCP} -c none $infile $outfile"
+eval "$MEMCHECK ${TIFFCP} -c none $infile $outfile"
+status=$?
+if [ $status != 0 ] ; then
+  echo "Returned failed status $status!"
+  echo "Output (if any) is in \"${outfile}\"."
+  exit $status
+fi
+echo "$MEMCHECK ${TIFFCMP} $outfile ${REFS}/$outfile"
+eval "$MEMCHECK ${TIFFCMP} $outfile ${REFS}/$outfile"
+status=$?
+if [ $status != 0 ] ; then
+  echo "Returned failed status $status!"
+  echo "\"${outfile}\" differs from reference file."
+  exit $status
+fi