[Bug lto/64837] New: lto plugun doesn't call ld_plugin_release_input_file

["hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64837

            Bug ID: 64837
           Summary: lto plugun doesn't call ld_plugin_release_input_file
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com
                CC: ccoutant at gcc dot gnu.org

Since lto plugin doesn't call ld_plugin_release_input_file,
plugin_maybe_claim in ld/plugin.c does

  /* fd belongs to us, not the plugin; but we don't need it.  */
  close (file->fd);

It may not work for other plugins, like LLVM plugin.  It
may also leak file descriptor when gold is used.