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;
           ^~
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;
 
-- 
2.30.2

On 2/13/23 17:13, 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;
>             ^~
> Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>

Reviewed-by: Cédric Le Goater <clg@kaod.org>

Thanks,

C.

> ---
>   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;
>   

Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>



On Mon, Feb 13, 2023 at 6:14 PM Pierrick Bouvier <
pierrick.bouvier@linaro.org> 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;
>            ^~
> 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;
>
> --
> 2.30.2
>
>