https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90825
--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> --- Author: mpolacek Date: Thu Jun 13 00:56:54 2019 New Revision: 272229 URL: https://gcc.gnu.org/viewcvs?rev=272229&root=gcc&view=rev Log: PR c++/90825 - endless recursion when evaluating sizeof. PR c++/90832 - endless recursion when evaluating sizeof. * constexpr.c (cxx_eval_constant_expression): Don't recurse on the result of fold_sizeof_expr if is returns a SIZEOF_EXPR. * typeck.c (cxx_sizeof_expr): Only return a SIZEOF_EXPR if the operand is instantiation-dependent. * g++.dg/cpp0x/constexpr-sizeof2.C: New test. * g++.dg/cpp0x/constexpr-sizeof3.C: New test. Added: branches/gcc-9-branch/gcc/testsuite/g++.dg/cpp0x/constexpr-sizeof2.C branches/gcc-9-branch/gcc/testsuite/g++.dg/cpp0x/constexpr-sizeof3.C Modified: branches/gcc-9-branch/gcc/cp/ChangeLog branches/gcc-9-branch/gcc/cp/constexpr.c branches/gcc-9-branch/gcc/cp/typeck.c