msvcp140: Add an _Equivalent implementation that allows for directories.

dlls/msvcp140/msvcp140.spec

@@ -3638,7 +3638,7 @@
 @ cdecl _Current_set(wstr) tr2_sys__Current_set_wchar
 @ extern _Denorm _Denorm
 @ cdecl _Dtest(ptr) _Dtest
-@ cdecl _Equivalent(wstr wstr) tr2_sys__Equivalent_wchar
+@ cdecl _Equivalent(wstr wstr) _Equivalent
 @ cdecl _Exp(ptr double long) _Exp
 @ stub _FCosh
 @ extern _FDenorm _FDenorm

dlls/msvcp140/tests/msvcp140.c

@@ -1400,7 +1400,6 @@ static void test_Equivalent(void)
         { f1W, NULL, 0 },
         { f1W, wine_test_dirW, 0 },
         { wine_test_dirW, f1W, 0 },
-        { wine_test_dirW, wine_test_dirW, -1 },
         { f1W_subdir, f2W, 0 },
         { f1W, f1W, 1 },
         { not_existW, f1W, 0 },
@@ -1429,6 +1428,11 @@ static void test_Equivalent(void)
         ok(errno == 0xdeadbeef, "errno = %d\n", errno);
     }
 
+    errno = 0xdeadbeef;
+    val = p_Equivalent(wine_test_dirW, wine_test_dirW);
+    ok(val == 1 || broken(val == -1), "_Equivalent() returned %d, expected %d\n", val, 1);
+    ok(errno == 0xdeadbeef, "errno = %d\n", errno);
+
     ok(DeleteFileW(f1W), "expect wine_test_dir/f1 to exist\n");
     ok(DeleteFileW(f2W), "expect wine_test_dir/f2 to exist\n");
     ok(p_Remove_dir(wine_test_dirW), "expect wine_test_dir to exist\n");

dlls/msvcp90/ios.c

@@ -15632,6 +15632,24 @@ int __cdecl tr2_sys__Equivalent_wchar(WCHAR const* path1, WCHAR const* path2)
     return ret;
 }
 
+/* _Equivalent, msvcp140 version */
+int __cdecl _Equivalent(WCHAR const* path1, WCHAR const* path2)
+{
+    HANDLE h1, h2;
+    int ret;
+
+    TRACE("(%s %s)\n", debugstr_w(path1), debugstr_w(path2));
+
+    h1 = CreateFileW(path1, 0, FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
+            NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0);
+    h2 = CreateFileW(path2, 0, FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
+            NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0);
+    ret = equivalent_handles(h1, h2);
+    CloseHandle(h1);
+    CloseHandle(h2);
+    return ret;
+}
+
 /* ?_Current_get@sys@tr2@std@@YAPA_WAAY0BAE@_W@Z */
 /* ?_Current_get@sys@tr2@std@@YAPEA_WAEAY0BAE@_W@Z */
 WCHAR* __cdecl tr2_sys__Current_get_wchar(WCHAR *current_path)