Hi! C++20, in particular https://wg21.link/P1120R0 paper voted into it, deprecates various operations between enumerators from different enumeration types etc., and as we've switched to -std=gnu++20 by default, this now results in warnings or errors during stage2 and onwards.
The following patch should fix mips build. Tested on x86_64 with a cross to mips, by doing make clean; make -j32 CXXFLAGS='-g -std=gnu++20' in the gcc/ directory. Ok for trunk? 2025-11-28 Jakub Jelinek <[email protected]> * config/mips/mips.cc (mips_unspec_address_offset): Avoid arithmetics between enumerators from different enum types. --- gcc/config/mips/mips.cc.jj 2025-10-10 18:26:04.910641601 +0200 +++ gcc/config/mips/mips.cc 2025-11-28 21:18:28.828718042 +0100 @@ -3315,7 +3315,7 @@ mips_unspec_address_offset (rtx base, rt enum mips_symbol_type symbol_type) { base = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, base), - UNSPEC_ADDRESS_FIRST + symbol_type); + UNSPEC_ADDRESS_FIRST + (int) symbol_type); if (offset != const0_rtx) base = gen_rtx_PLUS (Pmode, base, offset); return gen_rtx_CONST (Pmode, base); Jakub
