AP_Motors: protect against out-of-bounds memory access

resolves a compiler warning
9 years ago · 72a7f674ec
1 changed files with 1 additions and 1 deletions
--- a/libraries/AP_Motors/AP_Motors_Class.cpp
+++ b/libraries/AP_Motors/AP_Motors_Class.cpp
@ -132,7 +132,7 @@ uint32_t AP_Motors::rc_map_mask(uint32_t mask) const
				@@ -132,7 +132,7 @@ uint32_t AP_Motors::rc_map_mask(uint32_t mask) const
    for (uint8_t i=0; i<32; i++) {
        uint32_t bit = 1UL<<i;
        if (mask & bit) {
-            if (_motor_map_mask & bit) {
+            if ((i < AP_MOTORS_MAX_NUM_MOTORS) && (_motor_map_mask & bit)) {
                // we have a mapped motor number for this channel
                mask2 |= (1UL << _motor_map[i]);
            } else {