https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98440
--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jason Merrill <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:07f56824fd4da14a48030e698c8eb58de951c741 commit r11-7994-g07f56824fd4da14a48030e698c8eb58de951c741 Author: Jason Merrill <ja...@redhat.com> Date: Mon Apr 5 15:50:48 2021 -0400 c++: reinterpret_cast from prvalue to rvalue ref [PR98440] In r260622 I allowed this under the general principle that [basic.lval] "Whenever a prvalue appears as an operand of an operator that expects a glvalue for that operand, the temporary materialization conversion (7.3.4) is applied to convert the expression to an xvalue." But [expr.reinterpret.cast] specifically excludes creating a temporary in this case. gcc/cp/ChangeLog: PR c++/98440 * typeck.c (build_reinterpret_cast_1): Don't perform temporary materialization. gcc/testsuite/ChangeLog: * g++.dg/cpp0x/rv-cast6.C: Expect reinterpret_cast error. * g++.dg/cpp0x/reinterpret_cast2.C: Adjust message. * g++.old-deja/g++.jason/rvalue3.C: Likewise.
