Re: [PATCH v2 3/4] qga/vss-win32: fix warning for clang++-15

[Philippe Mathieu-Daudé]

On 16/2/23 14:49, Pierrick Bouvier wrote:
> Reported when compiling with clang-windows-arm64.
>
> ../qga/vss-win32/install.cpp:537:9: error: variable 'hr' is used uninitialized 
> whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized]
>      if (!(ControlService(service, SERVICE_CONTROL_STOP, NULL))) {
>          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ../qga/vss-win32/install.cpp:545:12: note: uninitialized use occurs here
>      return hr;
>             ^~

Fixes: 917ebcb170 ("qga-win: Fix QGA VSS Provider service stop failure")
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>

(please also carry the 'Fixes:' tags when respining patches)

> Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
> ---
>   qga/vss-win32/install.cpp | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/qga/vss-win32/install.cpp b/qga/vss-win32/install.cpp
> index b57508fbe0..b8087e5baa 100644
> --- a/qga/vss-win32/install.cpp
> +++ b/qga/vss-win32/install.cpp
> @@ -518,7 +518,7 @@ namespace _com_util
>   /* Stop QGA VSS provider service using Winsvc API  */
>   STDAPI StopService(void)
>   {
> -    HRESULT hr;
> +    HRESULT hr = S_OK;
>       SC_HANDLE manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
>       SC_HANDLE service = NULL;
>