fix: extend the lifetime of c_str

Seeed-Studio · Dec 11, 2023 · 903ce20 · 903ce20
1 parent ed644bb
commit 903ce20
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/sscma/types.hpp b/sscma/types.hpp
@@ -29,7 +29,8 @@ struct ipv4_addr_t {
             for (; (++i < s.length()) & (++n < 3);)
                 if (!std::isdigit(s[i])) break;
             if (n) {
-                r.addr[l++] = static_cast<uint8_t>(std::atoi(s.substr(i - n, n).c_str()));
+                auto num{s.substr(i - n, n)};
+                r.addr[l++] = static_cast<uint8_t>(std::atoi(num.c_str()));
                 if (l > 3) return r;
             }
         }