[Bug c++/90947] [9 Regression] Simple lookup table of array of strings is miscompiled

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90947

--- Comment #10 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Wed Aug 14 20:36:46 2019
New Revision: 274494

URL: https://gcc.gnu.org/viewcvs?rev=274494&root=gcc&view=rev
Log:
        Backport from mainline

        2019-08-01  Martin Sebor  <msebor@redhat.com>

        PR c++/90947
        * tree.c (type_initializer_zero_p): Define.
        * tree.h (type_initializer_zero_p): New function.

        2019-08-05  Martin Sebor  <msebor@redhat.com>

        * doc/extend.texi (Common Variable Attributes): Document alias
        attribute.

        2019-08-01  Martin Sebor  <msebor@redhat.com>

        PR c++/90947
        * decl.c (reshape_init_array_1): Avoid truncating initializer
        lists containing string literals.

        2019-08-14  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/91294
        * gcc.dg/strlenopt-44.c: Adjust tested result.
        * gcc.dg/strlenopt-70.c: Avoid exercising unimplemnted optimization.
        * gcc.dg/strlenopt-73.c: New test.
        * gcc.dg/strlenopt-74.c: New test.
        * gcc.dg/strlenopt-75.c: New test.
        * gcc.dg/strlenopt-76.c: New test.
        * gcc.dg/strlenopt-77.c: New test.

Added:
    branches/gcc-9-branch/gcc/testsuite/c-c++-common/array-1.c
    branches/gcc-9-branch/gcc/testsuite/g++.dg/abi/mangle73.C
    branches/gcc-9-branch/gcc/testsuite/g++.dg/cpp2a/nontype-class23.C
    branches/gcc-9-branch/gcc/testsuite/g++.dg/init/array53.C
Modified:
    branches/gcc-9-branch/gcc/ChangeLog
    branches/gcc-9-branch/gcc/cp/ChangeLog
    branches/gcc-9-branch/gcc/cp/decl.c
    branches/gcc-9-branch/gcc/doc/extend.texi
    branches/gcc-9-branch/gcc/testsuite/ChangeLog
    branches/gcc-9-branch/gcc/tree.c
    branches/gcc-9-branch/gcc/tree.h