strncat(tmp_fullpath, path, sizeof(tmp_fullpath) - 1) into a zero-initialized buffer triggers -Wstringop-truncation on newer GCC because the copy length equals the buffer size, so GCC flags it as potentially truncating.

Replaced the strncat chain with a single snprintf call, which also fixes a secondary bug on the old line 3041 where the third argument to strncat was strlen(tmp_fullpath) - 1 (which is the current string length, not the remaining buffer space). In practice this means the append could overrun the buffer if path was short and d_name was long enough.

Before:

char tmp_fullpath[1023] = {0};
strncat(tmp_fullpath, path, sizeof(tmp_fullpath) - 1);
tmp_fullpath[1023] = 0x00;
strncat(tmp_fullpath, namelist[i]->d_name, strlen(tmp_fullpath) - 1);

After:

snprintf(tmp_fullpath, sizeof(tmp_fullpath), "%s%s", path, namelist[i]->d_name);