[5/7] include/msvcrt: Define _TRUNCATE; use it in the tests.

[Alexander Scott-Johns]

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From 95392be9304c777a48526422b1ce1421c6f3b40e Mon Sep 17 00:00:00 2001
From: Alexander Scott-Johns <alexander.scott.johns at googlemail.com>
Date: Sun, 6 Jun 2010 16:24:09 +0100
Subject: include/msvcrt: Define _TRUNCATE; use it in the tests.

---
 dlls/msvcrt/tests/string.c |    8 ++++----
 include/msvcrt/stdlib.h    |    2 ++
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/dlls/msvcrt/tests/string.c b/dlls/msvcrt/tests/string.c
index f6c0e2c..1a362a1 100644
--- a/dlls/msvcrt/tests/string.c
+++ b/dlls/msvcrt/tests/string.c
@@ -1215,22 +1215,22 @@ static void test_mbstowcs(void)
         return;
     }
 
-    err = pmbstowcs_s(&ret, wOut, 6, mSimple, -1/*_TRUNCATE*/);
+    err = pmbstowcs_s(&ret, wOut, 6, mSimple, _TRUNCATE);
     ok(err == 0, "err = %d\n", err);
     ok(ret == 5, "ret = %d\n", (int)ret);
     ok(!memcmp(wOut, wSimple, sizeof(wSimple)), "wOut = %s\n", wine_dbgstr_w(wOut));
 
-    err = pmbstowcs_s(&ret, wOut, 6, mHiragana, -1/*_TRUNCATE*/);
+    err = pmbstowcs_s(&ret, wOut, 6, mHiragana, _TRUNCATE);
     ok(err == 0, "err = %d\n", err);
     ok(ret == 3, "ret = %d\n", (int)ret);
     ok(!memcmp(wOut, wHiragana, sizeof(wHiragana)), "wOut = %s\n", wine_dbgstr_w(wOut));
 
-    err = pwcstombs_s(&ret, mOut, 6, wSimple, -1/*_TRUNCATE*/);
+    err = pwcstombs_s(&ret, mOut, 6, wSimple, _TRUNCATE);
     ok(err == 0, "err = %d\n", err);
     ok(ret == 5, "ret = %d\n", (int)ret);
     ok(!memcmp(mOut, mSimple, sizeof(mSimple)), "mOut = %s\n", mOut);
 
-    err = pwcstombs_s(&ret, mOut, 6, wHiragana, -1/*_TRUNCATE*/);
+    err = pwcstombs_s(&ret, mOut, 6, wHiragana, _TRUNCATE);
     ok(err == 0, "err = %d\n", err);
     ok(ret == 5, "ret = %d\n", (int)ret);
     ok(!memcmp(mOut, mHiragana, sizeof(mHiragana)), "mOut = %s\n", mOut);
diff --git a/include/msvcrt/stdlib.h b/include/msvcrt/stdlib.h
index 6633ee9..35a9782 100644
--- a/include/msvcrt/stdlib.h
+++ b/include/msvcrt/stdlib.h
@@ -47,6 +47,8 @@ typedef struct
 #define _MAX_PATH           260
 #endif
 
+/* Make the secure string functions (names end in "_s") truncate their output */
+#define _TRUNCATE  ((size_t)-1)
 
 typedef struct _div_t {
     int quot;
-- 
1.6.0.4