do with FPO (frame-pointer-omission) optimized context frames where the context frame represents a Windows System call stub. git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@971 4c0a9323-5329-0410-9bdc-e9ce6186880e
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@722 4c0a9323-5329-0410-9bdc-e9ce6186880e
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@719 4c0a9323-5329-0410-9bdc-e9ce6186880e