[Bug c++/83947] [8 Regression] ICE on invalid C++ code with auto: in tsubst_decl, at cp/pt.c:13046

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83947

--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Tue Jan 23 21:23:53 2018
New Revision: 257000

URL: https://gcc.gnu.org/viewcvs?rev=257000&root=gcc&view=rev
Log:
        PR c++/83947 - ICE with auto declarations.

        * pt.c (do_auto_deduction): Don't deduce from an auto decl.
        * decl.c (undeduced_auto_decl): Limit to vars and fns.

Added:
    trunk/gcc/testsuite/g++.dg/cpp1y/auto-fn46.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/decl.c
    trunk/gcc/cp/pt.c