From 24753bcd4821ead4b96650b12e6b47efe11181cb Mon Sep 17 00:00:00 2001
From: Marcel Raad <Marcel.Raad@teamviewer.com>
Date: Sun, 25 Feb 2018 21:16:32 +0100
Subject: unit1309: fix warning on Windows x64

When targeting x64, MinGW-w64 complains about conversions between
32-bit long and 64-bit pointers. Fix this by reusing the
GNUTLS_POINTER_TO_SOCKET_CAST / GNUTLS_SOCKET_TO_POINTER_CAST logic
from gtls.c, moving it to warnless.h as CURLX_POINTER_TO_INTEGER_CAST /
CURLX_INTEGER_TO_POINTER_CAST.

Closes https://github.com/curl/curl/pull/2341
---
 lib/vtls/gtls.c | 15 +++------------
 lib/warnless.h  |  5 +++++
 2 files changed, 8 insertions(+), 12 deletions(-)

(limited to 'lib')

diff --git a/lib/vtls/gtls.c b/lib/vtls/gtls.c
index 30b255b81..078874103 100644
--- a/lib/vtls/gtls.c
+++ b/lib/vtls/gtls.c
@@ -60,15 +60,6 @@
 /* The last #include file should be: */
 #include "memdebug.h"
 
-#ifndef GNUTLS_POINTER_TO_SOCKET_CAST
-#define GNUTLS_POINTER_TO_SOCKET_CAST(p) \
-  ((curl_socket_t) ((char *)(p) - (char *)NULL))
-#endif
-#ifndef GNUTLS_SOCKET_TO_POINTER_CAST
-#define GNUTLS_SOCKET_TO_POINTER_CAST(s) \
-  ((void *) ((char *)NULL + (s)))
-#endif
-
 /* Enable GnuTLS debugging by defining GTLSDEBUG */
 /*#define GTLSDEBUG */
 
@@ -161,7 +152,7 @@ static int gtls_mapped_sockerrno(void)
 
 static ssize_t Curl_gtls_push(void *s, const void *buf, size_t len)
 {
-  ssize_t ret = swrite(GNUTLS_POINTER_TO_SOCKET_CAST(s), buf, len);
+  ssize_t ret = swrite(CURLX_POINTER_TO_INTEGER_CAST(s), buf, len);
 #if defined(USE_WINSOCK) && !defined(GNUTLS_MAPS_WINSOCK_ERRORS)
   if(ret < 0)
     gnutls_transport_set_global_errno(gtls_mapped_sockerrno());
@@ -171,7 +162,7 @@ static ssize_t Curl_gtls_push(void *s, const void *buf, size_t len)
 
 static ssize_t Curl_gtls_pull(void *s, void *buf, size_t len)
 {
-  ssize_t ret = sread(GNUTLS_POINTER_TO_SOCKET_CAST(s), buf, len);
+  ssize_t ret = sread(CURLX_POINTER_TO_INTEGER_CAST(s), buf, len);
 #if defined(USE_WINSOCK) && !defined(GNUTLS_MAPS_WINSOCK_ERRORS)
   if(ret < 0)
     gnutls_transport_set_global_errno(gtls_mapped_sockerrno());
@@ -857,7 +848,7 @@ gtls_connect_step1(struct connectdata *conn,
   }
   else {
     /* file descriptor for the socket */
-    transport_ptr = GNUTLS_SOCKET_TO_POINTER_CAST(conn->sock[sockindex]);
+    transport_ptr = CURLX_INTEGER_TO_POINTER_CAST(conn->sock[sockindex]);
     gnutls_transport_push = Curl_gtls_push;
     gnutls_transport_pull = Curl_gtls_pull;
   }
diff --git a/lib/warnless.h b/lib/warnless.h
index ab6d29998..efd552a60 100644
--- a/lib/warnless.h
+++ b/lib/warnless.h
@@ -26,6 +26,11 @@
 #include <curl/curl.h> /* for curl_socket_t */
 #endif
 
+#define CURLX_POINTER_TO_INTEGER_CAST(p) \
+  ((char *)(p) - (char *)NULL)
+#define CURLX_INTEGER_TO_POINTER_CAST(i) \
+  ((void *)((char *)NULL + (i)))
+
 unsigned short curlx_ultous(unsigned long ulnum);
 
 unsigned char curlx_ultouc(unsigned long ulnum);
-- 
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