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 loongarch build. Tested on x86_64 with a cross to loongarch, 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/loongarch/loongarch.cc (loongarch_unspec_address_offset): Avoid arithmetics between enumerators from different enum types. (loongarch_call_tls_get_addr): Likewise. --- gcc/config/loongarch/loongarch.cc.jj 2025-11-22 12:19:00.716733840 +0100 +++ gcc/config/loongarch/loongarch.cc 2025-11-28 21:35:56.056179223 +0100 @@ -3003,7 +3003,7 @@ loongarch_unspec_address_offset (rtx bas enum loongarch_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); @@ -3223,7 +3223,7 @@ loongarch_call_tls_get_addr (rtx sym, en rtx sum = gen_rtx_UNSPEC ( Pmode, gen_rtvec (1, loongarch_tls_symbol), UNSPEC_ADDRESS_FIRST - + loongarch_classify_symbol (loongarch_tls_symbol)); + + (int) loongarch_classify_symbol (loongarch_tls_symbol)); set_unique_reg_note (get_last_insn (), REG_EQUAL, sum); } else Jakub
