https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105376
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rgue...@gcc.gnu.org>:

https://gcc.gnu.org/g:e27eef7478f30ea79048dbde3317e89679d75a6e

commit r13-27-ge27eef7478f30ea79048dbde3317e89679d75a6e
Author: Richard Biener <rguent...@suse.de>
Date:   Wed Apr 27 08:28:31 2022 +0200

    middle-end/105376 - invalid REAL_CST for DFP constant

    We are eventually ICEing in decimal_to_decnumber on non-decimal
    REAL_VALUE_TYPE that creep in from uses of build_real (..., dconst*)
    for DFP types.  The following extends the decimal_to_decnumber
    special-casing of dconst* to build_real, avoiding the bogus REAL_CSTs
    from creeping into the IL and modified to ones not handled by
    the decimal_to_decnumber special casing.  It also makes sure to
    ICE for not handled dconst* values at the point we build the REAL_CST.

    2022-04-27  Richard Biener  <rguent...@suse.de>

            PR middle-end/105376
            * tree.cc (build_real): Special case dconst* arguments
            for decimal floating point types.

            * gcc.dg/pr105376.c: New testcase.

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