https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82081
--- Comment #9 from Jason Merrill <jason at gcc dot gnu.org> --- Author: jason Date: Mon Apr 29 17:27:13 2019 New Revision: 270656 URL: https://gcc.gnu.org/viewcvs?rev=270656&root=gcc&view=rev Log: PR c++/82081 - tail call optimization breaks noexcept If a noexcept function calls a function that might throw, doing the tail call optimization means that an exception thrown in the called function will propagate out, breaking the noexcept specification. So we need to prevent the optimization in that case. * tree-tailcall.c (find_tail_calls): Don't turn a call from a nothrow function to a might-throw function into a tail call. Added: trunk/gcc/testsuite/g++.dg/tree-ssa/tail-call-1.C Modified: trunk/gcc/ChangeLog trunk/gcc/tree-tailcall.c
