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Sub: add sanity check when fetching GCS_MAVLink instance

This commit is contained in:
Peter Barker 2019-06-25 12:58:06 +10:00 committed by Andrew Tridgell
parent 80c7449145
commit bd2516bc89
1 changed files with 10 additions and 2 deletions
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12
ArduSub/GCS_Sub.h
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@ -13,10 +13,18 @@ public:
uint8_t num_gcs() const override { return ARRAY_SIZE(_chan); };
// return GCS link at offset ofs
GCS_MAVLINK_Sub &chan(const uint8_t ofs) override {
GCS_MAVLINK_Sub &chan(uint8_t ofs) override {
if (ofs >= num_gcs()) {
AP::internalerror().error(AP_InternalError::error_t::gcs_offset);
ofs = 0;
}
return _chan[ofs];
};
const GCS_MAVLINK_Sub &chan(const uint8_t ofs) const override {
const GCS_MAVLINK_Sub &chan(uint8_t ofs) const override {
if (ofs >= num_gcs()) {
AP::internalerror().error(AP_InternalError::error_t::gcs_offset);
ofs = 0;
}
return _chan[ofs];
};