[Bug bootstrap/64189] [5.0 Regression] r218397 breaks bootstrap on darwin.

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64189

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 34194
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34194&action=edit
A patch

Please try this.