Export of internal Abseil changes

--
00f5301405423005d9129935c05f20155536cc1a by CJ Johnson <johnsoncj@google.com>:

Removes usage of std::aligned_storage from Abseil implementation details

PiperOrigin-RevId: 296492301

--
fc11d15f91764612fba080669d2381dc181df52b by Abseil Team <absl-team@google.com>:

Fix absl::bind_front documentation.

PiperOrigin-RevId: 296482945

--
0164c595c129c46bf21ae74eba5399a1da5f140b by Gennadiy Rozental <rogeeff@google.com>:

Automated g4 rollback of changelist 296320700.

PiperOrigin-RevId: 296439968

--
1eb295700758ca0894d872b2de7c675b4ad679af by Abseil Team <absl-team@google.com>:

Removes duplicate comments.

PiperOrigin-RevId: 296433214

--
c30c01caae02d2fa4ef783d988de6bebb9757c39 by Derek Mauro <dmauro@google.com>:

Merge GitHub #621: Add RISCV support to GetProgramCounter()

Fixes #621

PiperOrigin-RevId: 296351174

--
95d4498167596fd7543e025bdfe9a8da9e2ca3c8 by Abseil Team <absl-team@google.com>:

Automated g4 rollback of changelist 296320700.

PiperOrigin-RevId: 296348701

--
b193f0543e0cec54dddb2ed51f45dc489c8d06d5 by Gennadiy Rozental <rogeeff@google.com>:

Change TryParse interface to return managed value.

In addition introduce companion StoreValue routine which consumes pointer to source value and stores the value inside of FlagImpl. In a follow up CL we will change StoreValue implementation to behave differently depending on "value storage kind".
We also rename default_src_ to default_value_.

PiperOrigin-RevId: 296320700

--
57e942b485d12912a0a8d0d0b35fa2a62847020f by Derek Mauro <dmauro@google.com>:

Merge GitHub #622
 * Add missing #ifdef conditionals for ABSL_HAVE_VDSO_SUPPORT

PiperOrigin-RevId: 296272830
GitOrigin-RevId: 00f5301405423005d9129935c05f20155536cc1a
Change-Id: I1b05eeaf1280f95fb0a2c5f3654995a87c792893

1 files changed, 4 insertions, 4 deletions

diff --git a/absl/strings/cord.cc b/absl/strings/cord.cc
index cc0cc9d7075e..d9503ae332d7 100644
--- a/absl/strings/cord.cc
+++ b/absl/strings/cord.cc
@@ -63,16 +63,16 @@ namespace {
 // Type used with std::allocator for allocating and deallocating
 // `CordRepExternal`. std::allocator is used because it opaquely handles the
 // different new / delete overloads available on a given platform.
-using ExternalAllocType =
-    absl::aligned_storage_t<absl::cord_internal::ExternalRepAlignment(),
-                            absl::cord_internal::ExternalRepAlignment()>;
+struct alignas(absl::cord_internal::ExternalRepAlignment()) ExternalAllocType {
+  unsigned char value[absl::cord_internal::ExternalRepAlignment()];
+};
 
 // Returns the number of objects to pass in to std::allocator<ExternalAllocType>
 // allocate() and deallocate() to create enough room for `CordRepExternal` with
 // `releaser_size` bytes on the end.
 constexpr size_t GetExternalAllocNumObjects(size_t releaser_size) {
   // Be sure to round up since `releaser_size` could be smaller than
-  // sizeof(ExternalAllocType)`.
+  // `sizeof(ExternalAllocType)`.
   return (sizeof(CordRepExternal) + releaser_size + sizeof(ExternalAllocType) -
           1) /
          sizeof(ExternalAllocType);