GopherProxy

	sprint.c - 9base - revived minimalist port of Plan 9 userland to Unix
	git clone git://git.suckless.org/9base
	Log
	Files
	Refs
	README
	LICENSE
	---
	sprint.c (707B)
	---
	1 /* Copyright (c) 2002-2006 Lucent Technologies; see LICENSE */
	2 #include <stdarg.h>
	3 #include <fmt.h>
	4 #include "plan9.h"
	5 #include "fmt.h"
	6 #include "fmtdef.h"
	7
	8 int
	9 sprint(char buf, char fmt, ...)
	10 {
	11 int n;
	12 uint len;
	13 va_list args;
	14
	15 len = 1<<30; /* big number, but sprint is deprecated anyway */
	16 /*
	17 * on PowerPC, the stack is near the top of memory, so
	18 * we must be sure not to overflow a 32-bit pointer.
	19 *
	20 * careful! gcc-4.2 assumes buf+len < buf can never be true and
	21 * optimizes the test away. casting to uintptr works around thi…
	22 */
	23 if((uintptr)buf+len < (uintptr)buf)
	24 len = -(uintptr)buf-1;
	25
	26 va_start(args, fmt);
	27 n = vsnprint(buf, len, fmt, args);
	28 va_end(args);
	29 return n;
	30 }