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Merge pull request #10676 from qazbnm456/fix-unhandle-null-pointer

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Add a null-pointer check before processing base::SupportsUserData::GetUserData
This commit is contained in:
Cheng Zhao 2017-10-03 20:18:51 +09:00 • committed by GitHub
commit 150a4797a4
2 changed files with 17 additions and 9 deletions
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18
atom/browser/api/trackable_object.cc
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@ -6,6 +6,7 @@
#include "atom/browser/atom_browser_main_parts.h"
#include "base/bind.h"
#include "base/memory/ptr_util.h"
#include "base/supports_user_data.h"
namespace mate {
@ -46,16 +47,19 @@ void TrackableObjectBase::Destroy() {
}
void TrackableObjectBase::AttachAsUserData(base::SupportsUserData* wrapped) {
wrapped->SetUserData(kTrackedObjectKey, new IDUserData(weak_map_id_));
wrapped->SetUserData(kTrackedObjectKey,
base::MakeUnique<IDUserData>(weak_map_id_));
}
// static
int32_t TrackableObjectBase::GetIDFromWrappedClass(base::SupportsUserData* w) {
auto id = static_cast<IDUserData*>(w->GetUserData(kTrackedObjectKey));
if (id)
return *id;
else
return 0;
int32_t TrackableObjectBase::GetIDFromWrappedClass(
base::SupportsUserData* wrapped) {
if (wrapped) {
auto id = static_cast<IDUserData*>(wrapped->GetUserData(kTrackedObjectKey));
if (id)
return *id;
}
return 0;
}
// static