[Bug c++/79937] [6/7/8 Regression] ICE in replace_placeholders_r

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79937

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #43577|0                           |1
        is obsolete|                            |
  Attachment #43578|0                           |1
        is obsolete|                            |

--- Comment #20 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 43657
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43657&action=edit
gcc8-pr79937.patch

This patch seems to fix all the testcase and passes check-c++-all.
Given that #c18 is rejected, I wonder if it wouldn't be sufficient.