Usermode/libaxwin4 - Handle demarshal failure

diff --git a/Usermode/Libraries/libaxwin4.so_src/wm.cpp b/Usermode/Libraries/libaxwin4.so_src/wm.cpp
index 7ce61e4..3672078 100644 (file)
--- a/Usermode/Libraries/libaxwin4.so_src/wm.cpp
+++ b/Usermode/Libraries/libaxwin4.so_src/wm.cpp
@@ -127,6 +127,10 @@ extern "C" void *AxWin4_GetWindowBuffer(tAxWin4_Window *Window)
                
                uint64_t handle = response.ReadU64();
                Window->m_fd = _SysUnMarshalFD(handle);
+               if( Window->m_fd == -1 ) {
+                       _SysDebug("AxWin4_GetWindowBuffer: Unable to unmarshal resultant FD (0x%llx)", handle);
+                       return NULL;
+               }
                
                _SysDebug("AxWin4_GetWindowBuffer: %llx = %i", handle, Window->m_fd);
        }