From db882bfb5d2f24b427019a11ccd463fc92f50282 Mon Sep 17 00:00:00 2001
From: Francois Gouget <fgouget@codeweavers.com>
Date: Mon, 3 Oct 2011 23:39:10 +0200
Subject: [PATCH] kernel32/tests: Check what happens if QueryDosDeviceA() is
 given an insufficient buffer.

---
 dlls/kernel32/tests/volume.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/dlls/kernel32/tests/volume.c b/dlls/kernel32/tests/volume.c
index 6f0fd67b50d..2755af5a106 100644
--- a/dlls/kernel32/tests/volume.c
+++ b/dlls/kernel32/tests/volume.c
@@ -44,6 +44,12 @@ static void test_query_dos_deviceA(void)
     DWORD ret, ret2, buflen=32768;
     BOOL found = FALSE;
 
+    /* callers must guess the buffer size */
+    SetLastError(0xdeadbeef);
+    ret = QueryDosDeviceA( NULL, NULL, 0 );
+    ok(!ret && GetLastError() == ERROR_INSUFFICIENT_BUFFER,
+       "QueryDosDeviceA(no buffer): returned %u, le=%u\n", ret, GetLastError());
+
     buffer = HeapAlloc( GetProcessHeap(), 0, buflen );
     SetLastError(0xdeadbeef);
     ret = QueryDosDeviceA( NULL, buffer, buflen );
-- 
2.11.4.GIT