av_vbprintf(part+2, fmt, vl);
if(*part[0].str || *part[1].str || *part[2].str) {
- char lastc = part[2].len ? part[2].str[part[2].len - 1] : 0;
+ char lastc = part[2].len && part[2].len <= part[2].size ? part[2].str[part[2].len - 1] : 0;
*print_prefix = lastc == '\n' || lastc == '\r';
}
}