Preserve errno.

According to C99:
"The  functions  atof,  atoi,  atol, and atoll need not
affect the value of  the  integer  expression  errno  on  an
error.   If  the  value of the result cannot be represented,
the behavior is undefined."

1 files changed, 8 insertions, 2 deletions

diff --git a/lib/libc/stdlib/atoll.c b/lib/libc/stdlib/atoll.c
index 72ca59a..c0a7212 100644
--- a/lib/libc/stdlib/atoll.c
+++ b/lib/libc/stdlib/atoll.c
@@ -33,12 +33,18 @@
  * $FreeBSD$
  */
 
-#include <stddef.h>
+#include <errno.h>
 #include <stdlib.h>
 
 long long
 atoll(str)
 	const char *str;
 {
-	return(strtoll(str, (char **)NULL, 10));
+	long long r;
+	int saverr;
+
+	saverr = errno;
+	r = strtoll(str, (char **)NULL, 10);
+	errno = saverr;
+	return r;
 }