[Bug middle-end/94195] missing warning reading a smaller object via an lvalue of a larger type

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94195

--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Martin Sebor <msebor@gcc.gnu.org>:

https://gcc.gnu.org/g:3f9a497d1b0dd9da87908a11b59bf364ad40ddca

commit r11-3306-g3f9a497d1b0dd9da87908a11b59bf364ad40ddca
Author: Martin Sebor <msebor@redhat.com>
Date:   Sat Sep 19 17:47:29 2020 -0600

    Extend -Warray-bounds to detect out-of-bounds accesses to array parameters.

    gcc/ChangeLog:

            PR middle-end/82608
            PR middle-end/94195
            PR c/50584
            PR middle-end/84051
            * gimple-array-bounds.cc (get_base_decl): New function.
            (get_ref_size): New function.
            (trailing_array): New function.
            (array_bounds_checker::check_array_ref): Call them.  Handle arrays
            declared in function parameters.
            (array_bounds_checker::check_mem_ref):  Same.  Handle references to
            dynamically allocated arrays.

    gcc/testsuite/ChangeLog:

            PR middle-end/82608
            PR middle-end/94195
            PR c/50584
            PR middle-end/84051
            * c-c++-common/Warray-bounds.c: Adjust.
            * gcc.dg/Wbuiltin-declaration-mismatch-9.c: Adjust.
            * gcc.dg/Warray-bounds-63.c: New test.
            * gcc.dg/Warray-bounds-64.c: New test.
            * gcc.dg/Warray-bounds-65.c: New test.
            * gcc.dg/Warray-bounds-66.c: New test.
            * gcc.dg/Warray-bounds-67.c: New test.