--- snprintf.~c	2016-01-26 12:45:46.000000000 +0100
+++ snprintf.c	2016-06-02 12:12:12.000000000 +0200
@@ -804,7 +804,7 @@
  {
  	int signvalue = 0;
  	unsigned LLONG uvalue;
- 	char convert[20];
+ 	char convert[22+1];/* 64-bit value in octal: 22 digits + \0 */
  	int place = 0;
  	int spadlen = 0; /* amount to space pad */
  	int zpadlen = 0; /* amount to zero pad */
@@ -834,8 +834,8 @@
  			(caps? "0123456789ABCDEF":"0123456789abcdef")
  			[uvalue % (unsigned)base  ];
  		uvalue = (uvalue / (unsigned)base );
- 	} while(uvalue && (place < 20));
- 	if (place == 20) place--;
+ 	} while(uvalue && (place < sizeof convert));
+ 	if (place == sizeof convert) place--;
  	convert[place] = 0;
  
  	zpadlen = max - place;