4 files changed, 5 insertions, 8 deletions
diff --git a/ext/Win32API/Win32API.c b/ext/Win32API/Win32API.c
index 9a2de01f2d..766058d1aa 100644
--- a/ext/Win32API/Win32API.c
+++ b/ext/Win32API/Win32API.c
@@ -108,7 +108,7 @@ Win32API_initialize(self, dllname, proc, import, export)
     }
 
     if (16 < RARRAY_LEN(a_import)) {
-	rb_raise(rb_eRuntimeError, "too many parameters: %d\n", RARRAY_LEN(a_import));
+	rb_raise(rb_eRuntimeError, "too many parameters: %ld\n", RARRAY_LEN(a_import));
     }
 
     rb_iv_set(self, "__import__", a_import);
diff --git a/ext/socket/getnameinfo.c b/ext/socket/getnameinfo.c
index dcfdc6b35a..6214359cd2 100644
--- a/ext/socket/getnameinfo.c
+++ b/ext/socket/getnameinfo.c
@@ -35,6 +35,7 @@
  */
 
 #include "ruby/config.h"
+#include <stdio.h>
 #include <sys/types.h>
 #ifndef _WIN32
 #if defined(__BEOS__)
@@ -51,15 +52,11 @@
 #endif
 #include <netdb.h>
 #if defined(HAVE_RESOLV_H)
-#ifdef _SX
-#include <stdio.h>
-#endif
 #include <resolv.h>
 #endif
 #endif
 #ifdef _WIN32
 #include <winsock2.h>
-#include <stdio.h>
 #define snprintf _snprintf
 #endif
 
diff --git a/ext/tk/tcltklib.c b/ext/tk/tcltklib.c
index 4f779c731e..d057abbda6 100644
--- a/ext/tk/tcltklib.c
+++ b/ext/tk/tcltklib.c
@@ -4408,13 +4408,13 @@ ip_finalize(ip)
     }
 
     if (Tcl_InterpDeleted(ip)) {
-        DUMP2("ip(%lx) is already deleted", ip);
+        DUMP2("ip(%p) is already deleted", ip);
         return;
     }
 
 #if TCL_NAMESPACE_DEBUG
     if (ip_null_namespace(ip)) {
-        DUMP2("ip(%lx) has null namespace", ip);
+        DUMP2("ip(%p) has null namespace", ip);
         return;
     }
 #endif
diff --git a/ext/win32ole/win32ole.c b/ext/win32ole/win32ole.c
index 5b31898318..42336e70a0 100644
--- a/ext/win32ole/win32ole.c
+++ b/ext/win32ole/win32ole.c
@@ -2641,7 +2641,7 @@ static BOOL
 lcid_installed(LCID lcid)
 {
     g_lcid_installed = FALSE;
-    snprintf(g_lcid_to_check, sizeof(g_lcid_to_check), "%08x", lcid);
+    snprintf(g_lcid_to_check, sizeof(g_lcid_to_check), "%08lx", lcid);
     EnumSystemLocales(installed_lcid_proc, LCID_INSTALLED);
     return g_lcid_installed;
 }