[Bug c++/80370] [7 Regression] ICE when using structured bindings and nested generic lambdas (tsubst_decomp_names)

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80370

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Apr 11 20:51:16 2017
New Revision: 246857

URL: https://gcc.gnu.org/viewcvs?rev=246857&root=gcc&view=rev
Log:
        PR c++/80370
        * decl.c (cp_finish_decomp): If processing_template_decl on
        non-dependent decl, only set TREE_TYPE on the v[i] decls, but don't
        change their DECL_VALUE_EXPR nor cp_finish_decl them.  Instead make
        sure DECL_VALUE_EXPR is the canonical NULL type ARRAY_REF for tsubst
        processing.
        * pt.c (value_dependent_expression_p) <case VAR_DECL>: For variables
        with DECL_VALUE_EXPR, return true if DECL_VALUE_EXPR is type
        dependent.

        * g++.dg/cpp1z/decomp28.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/cpp1z/decomp28.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/decl.c
    trunk/gcc/cp/pt.c
    trunk/gcc/testsuite/ChangeLog