https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118207

--- Comment #8 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>:

https://gcc.gnu.org/g:65c8fd7b017482c6d6bd0c7a7c6e296f016e38d0

commit r15-6452-g65c8fd7b017482c6d6bd0c7a7c6e296f016e38d0
Author: Jakub Jelinek <ja...@redhat.com>
Date:   Sat Dec 28 15:42:56 2024 +0100

    gimple-fold: Fix up fold_array_ctor_reference RAW_DATA_CST handling
[PR118207]

    The following testcases ICE because fold_array_ctor_reference in the
    RAW_DATA_CST handling just return build_int_cst without actually checking
    that if type is non-NULL, TREE_TYPE (val) is uselessly convertible to it.

    By falling through the code after it without *suboff += we get everything
    we need, the two if conditionals will never be true (we've already
    checked that size == BITS_PER_UNIT and so can't be 0, and val will be
    INTEGER_CST), but it will do the important fold_ctor_reference call
    which will deal with type incompatibilities.

    2024-12-28  Jakub Jelinek  <ja...@redhat.com>

            PR tree-optimization/118207
            * gimple-fold.cc (fold_array_ctor_reference): For RAW_DATA_CST,
            just set val to build_int_cst and fall through to the normal
            element handling code instead of returning build_int_cst right
away.

            * gcc.dg/pr118207.c: New test.

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