samtools · jkbonfield · Feb 3, 2026 · Feb 3, 2026 · Feb 3, 2026
diff --git a/htscodecs/arith_dynamic.c b/htscodecs/arith_dynamic.c
@@ -759,6 +759,7 @@ unsigned char *arith_compress_to(unsigned char *in,  unsigned int in_size,
         }
         memcpy(out+c_meta_len, in, in_size);
         *out_size = in_size+c_meta_len;
+        return out;
     }
 
     if (order & X_STRIPE) {

diff --git a/tests/arith.test b/tests/arith.test
@@ -16,7 +16,7 @@ do
 	    cp $f $out/arith-nl
 	    ;;
     esac
-    for o in 0 1 64 65 128 129 192 193 8 9 4
+    for o in 0 1 32 64 65 128 129 192 193 8 9 4
     do
         if [ ! -e "$comp.$o" ]
         then

diff --git a/tests/dat/arith/qvar.32 b/tests/dat/arith/qvar.32
diff --git a/tests/dat/r4x16/qvar.32 b/tests/dat/r4x16/qvar.32
diff --git a/tests/rans4x16.test b/tests/rans4x16.test
@@ -9,7 +9,7 @@ for f in `ls -1 $srcdir/dat/q* $srcdir/htscodecs-corpus/dat/q* 2>/dev/null`
 do
     comp=${f%/*/*}/dat/r4x16/${f##*/}
     cut -f 1 < $f | tr -d '\012' > $out/r4x16-nl
-    for o in 0 1 64 65 128 129 192 193 68 69 132 133 196 197 8 9
+    for o in 0 1 32 64 65 128 129 192 193 68 69 132 133 196 197 8 9
     do
         if [ ! -e "$comp.$o" ]
         then