inform_gen: pass correct remaining length to strncat(..)

Improved version based on CodeQL documentation.
Yaskawa-Global · Jun 16, 2023 · fe34b07 · fe34b07
1 parent 9f1c599
commit fe34b07
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/InformCheckerAndGenerator.c b/src/InformCheckerAndGenerator.c
@@ -73,7 +73,8 @@ void Ros_InformChecker_CreateJob()
                 if (group->baseTrackGroupId != -1) //this robot has a base
                 {
                     sprintf(tagBuffer, ",BS%d", (group->baseTrackGroupId - MP_B1_GID) + 1);
-                    strncat(lineBuffer, tagBuffer, MAX_JOB_LINE_LENGTH);
+                    strncat(lineBuffer, tagBuffer,
+                        sizeof(lineBuffer) - Ros_strnlen(lineBuffer, MAX_JOB_LINE_LENGTH) - 1);
                 }
 
                 FileUtilityFunctions_WriteLine(fd, lineBuffer);