[Bug c++/70621] [6/7/8 Regression] ICE on invalid code at -O1 and above on x86_64-linux-gnu in record_reference, at cgraphbuild.c:64

[paolo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70621

--- Comment #13 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Tue Sep 12 19:45:37 2017
New Revision: 252040

URL: https://gcc.gnu.org/viewcvs?rev=252040&root=gcc&view=rev
Log:
/cp
2017-09-12  Paolo Carlini  <paolo.carl...@oracle.com>

        PR c++/70621
        * decl.c (start_decl): Early return error_mark_node if duplicate_decls
        returns it; avoid misleading error message.

/testsuite
2017-09-12  Paolo Carlini  <paolo.carl...@oracle.com>

        PR c++/70621
        * g++.dg/torture/pr70621.C: New.

Added:
    trunk/gcc/testsuite/g++.dg/torture/pr70621.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/decl.c
    trunk/gcc/testsuite/ChangeLog