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loader: Fix warnings about uninitialized variable 

g++ 4.4.5 outputs the following warnings in our code using the loader
session:

.../base/include/base/capability.h: In member function 'typename Genode::Trait::Call_return<typename IF::Ret_type>::Type Genode::Capability<RPC_INTERFACE>::call() const [with IF = Loader::Session::Rpc_view_geometry, RPC_INTERFACE = Loader::Session]':
.../base/include/base/capability.h:207: warning: 'ret.Genode::Capability<Loader::Session>::Return<Loader::Session::Rpc_view_geometry>::_value.Loader::Session::View_geometry::width' may be used uninitialized in this function
.../base/include/base/capability.h:207: warning: 'ret.Genode::Capability<Loader::Session>::Return<Loader::Session::Rpc_view_geometry>::_value.Loader::Session::View_geometry::height' may be used uninitialized in this function
.../base/include/base/capability.h:207: warning: 'ret.Genode::Capability<Loader::Session>::Return<Loader::Session::Rpc_view_geometry>::_value.Loader::Session::View_geometry::buf_x' may be used uninitialized in this function
.../base/include/base/capability.h:207: warning: 'ret.Genode::Capability<Loader::Session>::Return<Loader::Session::Rpc_view_geometry>::_value.Loader::Session::View_geometry::buf_y' may be used uninitialized in this function

This is easily fixed with providing a default constructor.

Because of the C++ rules regarding initialer lists code that used
them for View_geometry had to be modified to use a normal construction
call.  In my tests only Nitpicker had to be changed.
This commit is contained in:
Torsten Hilbrich 2012-10-29 08:06:47 +01:00 committed by Norman Feske
parent 45f007fa9f
commit 06ce0a8ef1
2 changed files with 5 additions and 2 deletions
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3
os/include/loader_session/loader_session.h
View File

@ -48,6 +48,9 @@ namespace Loader {
{
int width, height;
int buf_x, buf_y;
View_geometry(): width(0), height(0), buf_x(0), buf_y() {}
View_geometry(int w, int h, int x, int y): width(w), height(h), buf_x(x), buf_y(y) {}
};
typedef Genode::Rpc_in_buffer<64> Name;

4
os/src/server/loader/nitpicker.h
View File

@ -270,11 +270,11 @@ namespace Nitpicker {
*/
Loader::Session::View_geometry loader_view_geometry()
{
Loader::Session::View_geometry result = {
Loader::Session::View_geometry result(
min(_proxy_view.w(), _fb_width),
min(_proxy_view.h(), _fb_height),
_proxy_view.buf_x(),
_proxy_view.buf_y() };
_proxy_view.buf_y());
return result;
}