[Bug c++/66139] destructor not called for members of partially constructed anonymous struct/array

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66139

--- Comment #17 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Dec 19 14:06:45 2019
New Revision: 279576

URL: https://gcc.gnu.org/viewcvs?rev=279576&root=gcc&view=rev
Log:
        PR c++/66139 - EH cleanups for partially constructed aggregates.

There were several overlapping PRs about failure to clean up fully
constructed subobjects when an exception is thrown during aggregate
initialization of a temporary.  I fixed this for non-temporaries in the
context of 57510, but that fix didn't handle temporaries.  So this patch
does split_nonconstant_init at gimplification time, which is much smaller
than alternatives I tried.

        PR c++/57510
        * cp-gimplify.c (cp_gimplify_init_expr): Use split_nonconstant_init.
        * typeck2.c (split_nonconstant_init): Handle non-variable dest.
        (split_nonconstant_init_1): Clear TREE_SIDE_EFFECTS.
        * tree.c (is_local_temp): New.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/initlist116.C
    trunk/gcc/testsuite/g++.dg/cpp0x/initlist117.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/cp-gimplify.c
    trunk/gcc/cp/cp-tree.h
    trunk/gcc/cp/tree.c
    trunk/gcc/cp/typeck2.c
    trunk/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-eh.C