[njs] Fixed default implementation for nxt_explicit_memzero().

[Dmitry Volyntsev]

details:   http://hg.nginx.org/njs/rev/b769c1037a57
branches:  
changeset: 619:b769c1037a57
user:      Dmitry Volyntsev <xeioex at nginx.com>
date:      Wed Oct 03 15:38:19 2018 +0300
description:
Fixed default implementation for nxt_explicit_memzero().

Thanks to David CARLIER.

diffstat:

 nxt/nxt_string.h |  12 ++++++++++--
 1 files changed, 10 insertions(+), 2 deletions(-)

diffs (22 lines):

diff -r 26ebe2b71708 -r b769c1037a57 nxt/nxt_string.h
--- a/nxt/nxt_string.h	Wed Oct 03 15:36:36 2018 +0300
+++ b/nxt/nxt_string.h	Wed Oct 03 15:38:19 2018 +0300
@@ -57,8 +57,16 @@ nxt_upper_case(u_char c)
 #define nxt_explicit_memzero(buf, length)                                     \
     (void) (explicit_memset(buf, 0, length))
 #else
-#define nxt_explicit_memzero(buf, length)                                     \
-    nxt_memzero(buf, length)
+nxt_inline void
+nxt_explicit_memzero(u_char *buf, size_t length)
+{
+    volatile u_char  *p = (volatile u_char *) buf;
+
+    while (length != 0) {
+        *p++ = 0;
+        length--;
+    }
+}
 #endif