diff options
| author | Jonathan Wakely <jwakely@redhat.com> | 2021-11-10 16:59:29 +0000 |
|---|---|---|
| committer | Jonathan Wakely <jwakely@redhat.com> | 2021-11-11 18:16:17 +0000 |
| commit | 083fd73202fb7387c16b6c9beab9841939a62acb (patch) | |
| tree | 7a089906b594a4f235baa11e4e7b41e4a9ed2089 | |
| parent | ef0e100f5870bbb792f378858864f915696dd232 (diff) | |
| download | gcc-083fd73202fb7387c16b6c9beab9841939a62acb.zip gcc-083fd73202fb7387c16b6c9beab9841939a62acb.tar.gz gcc-083fd73202fb7387c16b6c9beab9841939a62acb.tar.bz2 | |
libstdc++: Make pmr::memory_resource::allocate implicitly create objects
Calling the placement version of ::operator new "implicitly creates
objects in the returned region of storage" as per [intro.object]. This
allows the returned memory to be used as storage for implicit-lifetime
types (including arrays) without additional action by the caller. This
is required by the proposed resolution of LWG 3147.
libstdc++-v3/ChangeLog:
* include/std/memory_resource (memory_resource::allocate):
Implicitly create objects in the returned storage.
| -rw-r--r-- | libstdc++-v3/include/std/memory_resource | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libstdc++-v3/include/std/memory_resource b/libstdc++-v3/include/std/memory_resource index 6bca0af..97d37f1 100644 --- a/libstdc++-v3/include/std/memory_resource +++ b/libstdc++-v3/include/std/memory_resource @@ -33,6 +33,7 @@ #if __cplusplus >= 201703L +#include <new> #include <vector> // vector #include <cstddef> // size_t, max_align_t, byte #include <shared_mutex> // shared_mutex @@ -103,7 +104,7 @@ namespace pmr void* allocate(size_t __bytes, size_t __alignment = _S_max_align) __attribute__((__returns_nonnull__,__alloc_size__(2),__alloc_align__(3))) - { return do_allocate(__bytes, __alignment); } + { return ::operator new(__bytes, do_allocate(__bytes, __alignment)); } void deallocate(void* __p, size_t __bytes, size_t __alignment = _S_max_align) |