https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43374
--- Comment #11 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:f39e6b4f5cd4e5362cf4b1004a591df2c8b00304 commit r15-5671-gf39e6b4f5cd4e5362cf4b1004a591df2c8b00304 Author: Jakub Jelinek <ja...@redhat.com> Date: Tue Nov 26 09:45:21 2024 +0100 builtins: Fix up DFP ICEs on __builtin_is{inf,finite,normal} [PR43374] __builtin_is{inf,finite,normal} builtins ICE on _Decimal{32,64,128,64x} operands unless those operands are constant. The problem is that we fold the builtins to comparisons with the largest finite number, but a) get_max_float was only handling binary floats b) real_from_string again assumes binary float and so we were ICEing in the build_real called after the two calls. This patch adds decimal handling into get_max_float (well, moves it from c-cppbuiltin.cc which was printing those for __DEC{32,64,128}_MAX__ macros) and uses real_from_string3 (perhaps it is time to rename it to just real_from_string now that we can use function overloading) so that it handles both binary and decimal floats. 2024-11-26 Jakub Jelinek <ja...@redhat.com> PR middle-end/43374 gcc/ * real.cc (get_max_float): Handle decimal float. * builtins.cc (fold_builtin_interclass_mathfn): Use real_from_string3 rather than real_from_string. Use "1E%d" format string rather than "0x1p%d" for decimal float minimum. gcc/c-family/ * c-cppbuiltin.cc (builtin_define_decimal_float_constants): Use get_max_float. gcc/testsuite/ * gcc.dg/dfp/pr43374.c: New test.
