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Subject: [Bug fortran/106987] [11/12/13/14 Regression] ICE in
 simplify_intrinsic_op, at fortran/expr.cc:1305
Date: Wed, 06 Mar 2024 16:57:17 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106987

--- Comment #4 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Harald Anlauf <anlauf@gcc.gnu.org>:

https://gcc.gnu.org/g:93e1d4d24ed014387da97e2ce11556d68fe98e66

commit r14-9340-g93e1d4d24ed014387da97e2ce11556d68fe98e66
Author: Harald Anlauf <anlauf@gmx.de>
Date:   Tue Mar 5 21:54:26 2024 +0100

    Fortran: error recovery while simplifying expressions [PR103707,PR10698=
7]

    When an exception is encountered during simplification of arithmetic
    expressions, the result may depend on whether range-checking is active
    (-frange-check) or not.  However, the code path in the front-end should
    stay the same for "soft" errors for which the exception is triggered by=
 the
    check, while "hard" errors should always terminate the simplification, =
so
    that error recovery is independent of the flag.  Separation of arithmet=
ic
    error codes into "hard" and "soft" errors shall be done consistently via
    is_hard_arith_error().

            PR fortran/103707
            PR fortran/106987

    gcc/fortran/ChangeLog:

            * arith.cc (is_hard_arith_error): New helper function to determ=
ine
            whether an arithmetic error is "hard" or not.
            (check_result): Use it.
            (gfc_arith_divide): Set "Division by zero" only for regular
            numerators of real and complex divisions.
            (reduce_unary): Use is_hard_arith_error to determine whether a =
hard
            or (recoverable) soft error was encountered.  Terminate immedia=
tely
            on hard error, otherwise remember code of first soft error.
            (reduce_binary_ac): Likewise.
            (reduce_binary_ca): Likewise.
            (reduce_binary_aa): Likewise.

    gcc/testsuite/ChangeLog:

            * gfortran.dg/pr99350.f90:
            * gfortran.dg/arithmetic_overflow_3.f90: New test.=