[Bug tree-optimization/71625] missing strlen optimization on different array initialization style

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71625

--- Comment #26 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-9 branch has been updated by Jason Merrill
<jason@gcc.gnu.org>:

https://gcc.gnu.org/g:dcb23017b1a9f65a81dbbe0f2b1a42999f7b2ac7

commit r9-8184-gdcb23017b1a9f65a81dbbe0f2b1a42999f7b2ac7
Author: Jason Merrill <jason@redhat.com>
Date:   Sun Jan 26 22:19:47 2020 -0500

    c++: Fix array of char typedef in template (PR90966).

    Since Martin Sebor's patch for PR 71625 to change braced array initializers
    to STRING_CST in some cases, we need to be ready for STRING_CST with types
    that are changed by tsubst.  fold_convert doesn't know how to deal with
    STRING_CST, which is reasonable; we really shouldn't expect it to here.  So
    let's handle STRING_CST separately.

        PR c++/90966
        * pt.c (tsubst_copy) [STRING_CST]: Don't use fold_convert.