libavutil/base64.c:83: error: Integer Overflow L2
  ([`len`, min(1073741822, `len`)] × 4):signed32.

libavutil/base64.c:73:1: <LHS trace>
71. *****************************************************************************/
72. 
73. char *av_base64_encode(char * buf, int buf_len, const uint8_t * src, int len)
    ^
74. {
75.     static const char b64[] =

libavutil/base64.c:73:1: Parameter `len`
71. *****************************************************************************/
72. 
73. char *av_base64_encode(char * buf, int buf_len, const uint8_t * src, int len)
    ^
74. {
75.     static const char b64[] =

libavutil/base64.c:83:9: Binary operation: ([len, min(1073741822, len)] × 4):signed32
81. 
82.     if (len >= UINT_MAX / 4 ||
83.         buf_len < len * 4 / 3 + 12)
            ^
84.         return NULL;
85.     ret = dst = buf;
