[Bug tree-optimization/108522] [12 Regression] ICE in tree-object-size when struct has VLA

["cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108522

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Siddhesh Poyarekar
<siddhesh@gcc.gnu.org>:

https://gcc.gnu.org/g:4526562a305b3bfc18485a2aa017500aa22aa14b

commit r12-9112-g4526562a305b3bfc18485a2aa017500aa22aa14b
Author: Siddhesh Poyarekar <siddhesh@gotplt.org>
Date:   Tue Jan 24 19:47:05 2023 -0500

    tree-optimization/108522 Use COMPONENT_REF offset when available

    Use the offset in TREE_OPERAND(component_ref, 2) when available instead
    of DECL_FIELD_OFFSET when trying to compute offset for a COMPONENT_REF.

    Co-authored-by: Jakub Jelinek <jakub@redhat.com>

    gcc/ChangeLog:

            PR tree-optimization/108522
            * tree-object-size.cc (compute_object_offset): Use
            TREE_OPERAND(ref, 2) for COMPONENT_REF when available.

    gcc/testsuite/ChangeLog:

            PR tree-optimization/108522
            * gcc.dg/builtin-dynamic-object-size-0.c
            (test_dynarray_struct_member): New test.
            (main): Call it.

    Signed-off-by: Siddhesh Poyarekar <siddhesh@gotplt.org>
    (cherry picked from commit b851ee9fdf0f3023635f0cb1f7c607b2d6801053)