Added "const" to ngx_memcpy() with NGX_MEMCPY_LIMIT defined.
This fixes warning produced during compilation of the ngx_http_geoip_module
due to const qualifier being discarded.
diff --git a/src/core/ngx_string.c b/src/core/ngx_string.c
index 8aaa1d2..3b392f7 100644
--- a/src/core/ngx_string.c
+++ b/src/core/ngx_string.c
@@ -1827,7 +1827,7 @@
#if (NGX_MEMCPY_LIMIT)
void *
-ngx_memcpy(void *dst, void *src, size_t n)
+ngx_memcpy(void *dst, const void *src, size_t n)
{
if (n > NGX_MEMCPY_LIMIT) {
ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, "memcpy %uz bytes", n);
diff --git a/src/core/ngx_string.h b/src/core/ngx_string.h
index fa386ca..92d246e 100644
--- a/src/core/ngx_string.h
+++ b/src/core/ngx_string.h
@@ -89,7 +89,7 @@
#if (NGX_MEMCPY_LIMIT)
-void *ngx_memcpy(void *dst, void *src, size_t n);
+void *ngx_memcpy(void *dst, const void *src, size_t n);
#define ngx_cpymem(dst, src, n) (((u_char *) ngx_memcpy(dst, src, n)) + (n))
#else
