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AP_OSD: fixed vsnprintf return assumption

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Andrew Tridgell 2019-09-11 17:44:41 +10:00
parent 98c2606c0a
commit 6af9d55e70
1 changed files with 1 additions and 0 deletions
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1
libraries/AP_OSD/AP_OSD_Backend.cpp
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@ -32,6 +32,7 @@ void AP_OSD_Backend::write(uint8_t x, uint8_t y, bool blink, const char *fmt, ..
va_list ap;
va_start(ap, fmt);
int res = hal.util->vsnprintf(buff, sizeof(buff), fmt, ap);
res = MIN(res, int(sizeof(buff)));
if (res > 0 && check_option(AP_OSD::OPTION_DECIMAL_PACK)) {
// automatically use packed decimal characters
// based on fiam idea implemented in inav osd