Alistair Leslie-Hughes : msdasql: Support NULL dialect in GetCommandText.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 5f8e3a0c74ac4a9289a4a75720e463c684e88e8f
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=5f8e3a0c74ac4a9289a4a7572...

Author: Alistair Leslie-Hughes <leslie_alistair(a)hotmail.com>
Date:   Tue Nov 16 19:31:37 2021 +1100

msdasql: Support NULL dialect in GetCommandText.

Signed-off-by: Alistair Leslie-Hughes <leslie_alistair(a)hotmail.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/msdasql/session.c        | 2 +-
 dlls/msdasql/tests/provider.c | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/dlls/msdasql/session.c b/dlls/msdasql/session.c
index 3829f8f946f..196fd1c6b81 100644
--- a/dlls/msdasql/session.c
+++ b/dlls/msdasql/session.c
@@ -910,7 +910,7 @@ static HRESULT WINAPI command_GetCommandText(ICommandText *iface, GUID *dialect,
     if (!command->query)
         return DB_E_NOCOMMAND;
 
-    if (!IsEqualGUID(&DBGUID_DEFAULT, dialect))
+    if (dialect && !IsEqualGUID(&DBGUID_DEFAULT, dialect))
     {
         *dialect = DBGUID_DEFAULT;
         hr = DB_S_DIALECTIGNORED;
diff --git a/dlls/msdasql/tests/provider.c b/dlls/msdasql/tests/provider.c
index 37230be04cb..a0b11194f2b 100644
--- a/dlls/msdasql/tests/provider.c
+++ b/dlls/msdasql/tests/provider.c
@@ -265,6 +265,12 @@ if (0)
     hr = ICommandText_SetCommandText(comand_text, &DBGUID_DEFAULT, L"select * from testing");
     ok(hr == S_OK, "got 0x%08x\n", hr);
 
+
+    hr = ICommandText_GetCommandText(comand_text, NULL, &str);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+    ok (!lstrcmpW(L"select * from testing", str), "got %s\n", debugstr_w(str));
+    HeapFree(GetProcessHeap(), 0, str);
+
     /* dialect empty value */
     hr = ICommandText_GetCommandText(comand_text, &dialect, &str);
     ok(hr == DB_S_DIALECTIGNORED, "got 0x%08x\n", hr);