https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118862
--- Comment #8 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Thomas Koenig <tkoe...@gcc.gnu.org>: https://gcc.gnu.org/g:b57e6e1b38cdaf7a982474d93ebede1cc30f1d46 commit r15-7586-gb57e6e1b38cdaf7a982474d93ebede1cc30f1d46 Author: Thomas Koenig <tkoe...@gcc.gnu.org> Date: Sun Feb 16 12:15:40 2025 +0100 Avoid shift wider than unsigned HOST_WIDE_INT on unsigned integer exponentiation. this patch is a variation of Jakub's patch in the PR, which avoids overflow on the mask used for exponentiation and fixes unsigned HOST_WIDE_INT. I tried testing this on a POWER machine, but --with-build-config=bootstrap-ubsan fails bootstrap there. gcc/fortran/ChangeLog: PR fortran/118862 * trans-expr.cc (gfc_conv_cst_int_power): Use functions for unsigned wide integer. (gfc_conv_cst_uint_power): Avoid generating the mask if it would overflow an unsigned HOST_WIDE_INT. Format fixes.
