Changes imported from Abseil "staging" branch:

  - d5a5960a133967e4af02836d304884cd6cbd6e46 Adjusting time tests for flakiness by Gennadiy Civil <misterg@google.com>
  - ccb8535fdc92c3c99bfa2795e75d3fbdcb134571 Internal-only tweak. by Jorg Brown <jorg@google.com>
  - 4c03dd9e54bd4645e7e7a8dfb3c590f5b0654884 Fix comment on some C++11 type traits backport. by Xiaoyi Zhang <zhangxy@google.com>
  - 43cd12d2304464163e33ae932fbb842a869213dd Allow intrinsic int128 to be set for __ppc64__ targets. by Abseil Team <absl-team@google.com>
  - 789e9c13de67ef3c7ba09c765c3484621897b6bb Update README.md description of 'types' library to be con... by Abseil Team <absl-team@google.com>
  - 8be10d7683c90b85244ddc67360a7ca2dfffdf01 Update comment on move constructors' noexcept specificati... by Xiaoyi Zhang <zhangxy@google.com>

GitOrigin-RevId: d5a5960a133967e4af02836d304884cd6cbd6e46
Change-Id: I743efee47b9e65f46a44d9ab80ccd62cfd0c1301

1 files changed, 15 insertions, 0 deletions

diff --git a/absl/container/inlined_vector.h b/absl/container/inlined_vector.h
index f060f5c5c40f..f68ca5074149 100644
--- a/absl/container/inlined_vector.h
+++ b/absl/container/inlined_vector.h
@@ -124,9 +124,24 @@ class InlinedVector {
   InlinedVector(const InlinedVector& v);
   InlinedVector(const InlinedVector& v, const allocator_type& alloc);
 
+  // This move constructor does not allocate and only moves the underlying
+  // objects, so its `noexcept` specification depends on whether moving the
+  // underlying objects can throw or not. We assume
+  //  a) move constructors should only throw due to allocation failure and
+  //  b) if `value_type`'s move constructor allocates, it uses the same
+  //     allocation function as the `InlinedVector`'s allocator, so the move
+  //     constructor is non-throwing if the allocator is non-throwing or
+  //     `value_type`'s move constructor is specified as `noexcept`.
   InlinedVector(InlinedVector&& v) noexcept(
       absl::allocator_is_nothrow<allocator_type>::value ||
       std::is_nothrow_move_constructible<value_type>::value);
+
+  // This move constructor allocates and also moves the underlying objects, so
+  // its `noexcept` specification depends on whether the allocation can throw
+  // and whether moving the underlying objects can throw. Based on the same
+  // assumptions above, the `noexcept` specification is dominated by whether the
+  // allocation can throw regardless of whether `value_type`'s move constructor
+  // is specified as `noexcept`.
   InlinedVector(InlinedVector&& v, const allocator_type& alloc) noexcept(
       absl::allocator_is_nothrow<allocator_type>::value);