From c4a9c79e287af898f59ed133a4a67e688c0f9569 Mon Sep 17 00:00:00 2001
From: Ilia Alshanetsky <iliaa@php.net>
Date: Wed, 4 Feb 2009 15:03:12 +0000
Subject: [PATCH] Syn spprintf fix with that of 5.3 and above

---
 configure.in    |  1 +
 main/spprintf.c | 13 ++++++++++---
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/configure.in b/configure.in
index fd8ae48320..419b3f9736 100644
--- a/configure.in
+++ b/configure.in
@@ -579,6 +579,7 @@ strcoll \
 strdup \
 strerror \
 strftime \
+strnlen \
 strptime \
 strstr \
 strtok_r \
diff --git a/main/spprintf.c b/main/spprintf.c
index aeecc6ca70..b21e1fe144 100644
--- a/main/spprintf.c
+++ b/main/spprintf.c
@@ -180,6 +180,13 @@
 
 /* }}} */
 
+#if !HAVE_STRNLEN
+static size_t strnlen(const char *s, size_t maxlen) {
+	char *r = memchr(s, '\0', maxlen);
+	return r ? r-s : maxlen;
+}
+#endif
+
 /*
  * Do format conversion placing the output in buffer
  */
@@ -547,10 +554,10 @@ static void xbuf_format_converter(smart_str *xbuf, const char *fmt, va_list ap)
 				case 'v':
 					s = va_arg(ap, char *);
 					if (s != NULL) {
-						if (adjust_precision && precision) {
-							s_len = precision;
-						} else {
+						if (!adjust_precision) {
 							s_len = strlen(s);
+						} else {
+							s_len = strnlen(s, precision);
 						}
 					} else {
 						s = S_NULL;
-- 
2.50.1