Bug: https://bugs.gentoo.org/646538
Upstream commit: https://bitbucket.org/odedevs/ode/commits/6f44023660dc830147a56314ea0627a23f11ad86

# HG changeset patch
# User oleh_derevenko <>
# Date 1521993135 -10800
# Node ID 6f44023660dc830147a56314ea0627a23f11ad86
# Parent  6a68227619feebf85513331d7320b5a89eadf44f
Fixed: Command line parameter validation errors have been fixed in some demos (reported by Peter Levine)

diff --git a/ode/demo/demo_jointPR.cpp b/ode/demo/demo_jointPR.cpp
--- a/ode/demo/demo_jointPR.cpp
+++ b/ode/demo/demo_jointPR.cpp
@@ -328,8 +328,8 @@
             if (0 == strcmp("-t", argv[i]) || 0 == strcmp("--texture-path", argv[i]))
             {
                 int j = i+1;
-                if ( j+1 > argc      ||  // Check if we have enough arguments
-                        argv[j] == '\0' ||  // We should have a path here
+                if ( j >= argc      ||  // Check if we have enough arguments
+                        argv[j][0] == '\0' ||  // We should have a path here
                         argv[j][0] == '-' ) // We should have a path not a command line
                     Help(argv);
                 else
diff --git a/ode/demo/demo_jointPU.cpp b/ode/demo/demo_jointPU.cpp
--- a/ode/demo/demo_jointPU.cpp
+++ b/ode/demo/demo_jointPU.cpp
@@ -575,8 +575,8 @@
 
       if (0 == strcmp ("-t", argv[i]) || 0 == strcmp ("--texture-path", argv[i]) ) {
         int j = i+1;
-        if ( j+1 > argc      ||  // Check if we have enough arguments
-             argv[j] == '\0' ||  // We should have a path here
+        if ( j >= argc      ||  // Check if we have enough arguments
+             argv[j][0] == '\0' ||  // We should have a path here
              argv[j][0] == '-' ) // We should have a path not a command line
           Help (argv);
         else
diff --git a/ode/demo/demo_piston.cpp b/ode/demo/demo_piston.cpp
--- a/ode/demo/demo_piston.cpp
+++ b/ode/demo/demo_piston.cpp
@@ -658,8 +658,8 @@
                 if ( 0 == strcmp ("-t", argv[i]) || 0 == strcmp ("--texture-path", argv[i]) )
                 {
                     int j = i+1;
-                    if ( j+1 > argc      ||  // Check if we have enough arguments
-                            argv[j] == '\0' ||  // We should have a path here
+                    if ( j >= argc      ||  // Check if we have enough arguments
+                            argv[j][0] == '\0' ||  // We should have a path here
                             argv[j][0] == '-' ) // We should have a path not a command line
                         Help (argv);
                     else