commit ceae63cb45b21002f72fb4d12c60288a2084acdd
author Anuj Verma <anujv@iitbhilai.ac.in> Mon Aug 02 09:44:16 2021 +0530
committer Anuj Verma <anujv@iitbhilai.ac.in> Mon Aug 02 09:44:16 2021 +0530
tree 068d431c155423f4f1fde9e9d841add9a7e73ec3
parent ebcc96e559257756478bb93304fbd973857c4c90

[sdf] Fix out-of-range-access.

  * src/sdf/ftbsdf.c (first_pass, second_pass): Fix range during
  forward pass otherwise the index goes out-of-range for the last
  column.

  Reported by @Gajumaru314159. Issue #1077

src/sdf/ftbsdf.c

diff --git a/src/sdf/ftbsdf.c b/src/sdf/ftbsdf.c
index db4a2dd..d837a79 100644
--- a/src/sdf/ftbsdf.c
+++ b/src/sdf/ftbsdf.c
@@ -928,7 +928,7 @@
 
       /* Forward pass of rows (left -> right).  Leave the first  */
       /* column, which gets covered in the backward pass.        */
-      for ( i = 1; i < w; i++ )
+      for ( i = 1; i < w - 1; i++ )
       {
         index   = j * w + i;
         current = dm + index;
@@ -997,7 +997,7 @@
 
       /* Forward pass of rows (left -> right).  Leave the first */
       /* column, which gets covered in the backward pass.       */
-      for ( i = 1; i < w; i++ )
+      for ( i = 1; i < w - 1; i++ )
       {
         index   = j * w + i;
         current = dm + index;