https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69533
--- Comment #4 from Jeffrey A. Law <law at redhat dot com> --- I believe it's in replace_substring.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69533
--- Comment #4 from Jeffrey A. Law <law at redhat dot com> --- I believe it's in replace_substring.