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On Sat, Jan 22, 2022 at 01:47:08AM +0100, Jakub Jelinek via Gcc-patches wrote: > I think with the 2) patch I achieve what we want for Fortran, for 1) > the only behavior from gcc 11 is that > -fsanitize-coverage=trace-cmp,trace-cmp is now rejected. > This is mainly from the desire to disallow > -fconvert=big-endian,little-endian or -Wbidi-chars=bidirectional,any > etc. where it would be confusing to users what exactly it means. > But it is the only from these options that actually acts as an Enum > bit set, each enumerator can be specified with all the others. > So one option would be stop requiring the EnumSet implies Set properties > must be specified and just require that either they are specified on all > EnumValues, or on none of them; the latter case would be for > -fsanitize-coverage= and the non-Set case would mean that all the > EnumValues need to have disjoint Value bitmasks and that they can > be all specified and unlike the Set case also repeated. > Thoughts on this? Here is an incremental patch to the first two patches of the series that implements EnumBitSet that fully restores the -fsanitize-coverage GCC 11 behavior. 2022-01-24 Jakub Jelinek <jakub@redhat.com> PR sanitizer/104158 * opt-functions.awk (var_set): Handle EnumBitSet property. * optc-gen.awk: Don't disallow RejectNegative if EnumBitSet is specified. * opts.h (enum cl_enum_var_value): New type. * opts-common.cc (decode_cmdline_option): Use CLEV_* values. Handle CLEV_BITSET. (cmdline_handle_error): Handle CLEV_BITSET. * opts.cc (test_enum_sets): Also test EnumBitSet requirements. * doc/options.texi (EnumBitSet): Document. * common.opt (fsanitize-coverage=): Use EnumBitSet instead of EnumSet. (trace-pc, trace-cmp): Drop Set properties. * gcc.dg/sancov/pr104158-7.c: Adjust for repeating of arguments being allowed. |
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