From d087b59527a658a4de13febbb593edbf03339e93 Mon Sep 17 00:00:00 2001 From: Jason Merrill Date: Mon, 11 Apr 2022 13:06:05 -0400 Subject: [PATCH] c++: operator new lookup [PR98249] The standard says, as we quote in the comment just above, that if we don't find operator new in the allocated type, it should be looked up in the global scope. This is specifically ::, not just any namespace, and we already give an error for an operator new declared in any other namespace. PR c++/98249 gcc/cp/ChangeLog: * call.cc (build_operator_new_call): Just look in ::. gcc/testsuite/ChangeLog: * g++.dg/lookup/new3.C: New test. --- gcc/cp/call.cc | 3 +-- gcc/testsuite/g++.dg/lookup/new3.C | 10 ++++++++++ 2 files changed, 11 insertions(+), 2 deletions(-) create mode 100644 gcc/testsuite/g++.dg/lookup/new3.C diff --git a/gcc/cp/call.cc b/gcc/cp/call.cc index 73fede5..3a8d7e4 100644 --- a/gcc/cp/call.cc +++ b/gcc/cp/call.cc @@ -4899,8 +4899,7 @@ build_operator_new_call (tree fnname, vec **args, up in the global scope. we disregard block-scope declarations of "operator new". */ - fns = lookup_name (fnname, LOOK_where::NAMESPACE); - fns = lookup_arg_dependent (fnname, fns, *args); + fns = lookup_qualified_name (global_namespace, fnname); if (align_arg) { diff --git a/gcc/testsuite/g++.dg/lookup/new3.C b/gcc/testsuite/g++.dg/lookup/new3.C new file mode 100644 index 0000000..36afb5b --- /dev/null +++ b/gcc/testsuite/g++.dg/lookup/new3.C @@ -0,0 +1,10 @@ +// PR c++/98249 + +#include +struct Incomplete; +template struct Holder { T t; }; +Holder *p; +void test() { + ::new (p) int; + new (p) int; +} -- 2.7.4