[Bug sanitizer/59061] Port leaksanitizer

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59061

--- Comment #23 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 31221
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31221&action=edit
gcc49-pr59061.patch

Untested patch.