https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92105
--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> --- Author: jason Date: Wed Dec 11 16:51:14 2019 New Revision: 279237 URL: https://gcc.gnu.org/viewcvs?rev=279237&root=gcc&view=rev Log: PR c++/92105 - decltype(decltype) error cascade. The primary change here is to do the CPP_DECLTYPE replacement even when we get an error, so we don't keep trying and giving the same parse error each time. We also commit to the tentative firewall parse more often, leading to better diagnostics. * parser.c (cp_parser_decltype_expr): Don't tentative_firewall here. (cp_parser_decltype): Do it here. Remember a non-tentative error. Added: trunk/gcc/testsuite/g++.dg/cpp0x/decltype-err1.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/parser.c trunk/gcc/testsuite/g++.dg/cpp0x/decltype10.C
