https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85113
--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> --- Author: jason Date: Tue Apr 3 19:14:03 2018 New Revision: 259053 URL: https://gcc.gnu.org/viewcvs?rev=259053&root=gcc&view=rev Log: PR c++/85113 - ICE with constexpr and __builtin_constant_p. * constexpr.c (cxx_eval_builtin_function_call): Only defer __builtin_constant_p if ctx->quiet. Added: branches/gcc-7-branch/gcc/testsuite/g++.dg/ext/builtin12.C Modified: branches/gcc-7-branch/gcc/cp/ChangeLog branches/gcc-7-branch/gcc/cp/constexpr.c