Export of internal Abseil changes.

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f6c627ce4470a814adc377947b58346eef69a4c9 by Jon Cohen <cohenjon@google.com>:

Don't create install rules when Abseil is used as a subdirectory.

Fix #287

PiperOrigin-RevId: 240559825

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a5d9b06fe736143068997988b654b5f66ec3266a by Matt Calabrese <calabrese@google.com>:

Make absl::nullopt an inline constexpr variable, as specified in the standard (with a workaround for pre-c++17 compilers).

PiperOrigin-RevId: 240552286

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d7bee50cff745fbb8d1cdf56a200d9073d311c80 by Abseil Team <absl-team@google.com>:

Internal Change

PiperOrigin-RevId: 240425622

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828dd49d392d83dbeecd9d3e9cb14551ab265905 by Jon Cohen <cohenjon@google.com>:

Add default link options to absl builds.

Currently all this does is add -ignore:4221 to Abseil msvc builds, but the structure is all in place to add more link options when necessary

Fix #277

Note: This CL changes tact for us in that it puts the default options in the helper function as opposed to the invocations of absl_cc_blah.  The original intent of keeping these out of the helper functions was to make generating the CMakeLists.txt files have a smaller diff, but looking now that is a problem for the future, and small compared to making maintenance and use of our CMake buildsystem easier
PiperOrigin-RevId: 240409463

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4aa120e9dcf76d29e9ca0008d0f6d4d9fa8abe8c by Matt Kulukundis <kfm@google.com>:

Reduce flake rate for non-determistic test to < 1/10,000

PiperOrigin-RevId: 240370938

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bc30e219531827bfbf90915b2067c7fb8160bb6d by Derek Mauro <dmauro@google.com>:

Add Bazel caching on Kokoro for new linux targets.

PiperOrigin-RevId: 240356556

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c4e06d79a50d7bb211312b7845c4bd92c0761747 by Jon Cohen <cohenjon@google.com>:

include AbseilInstallDirs instead of GNUInstallDirs.  It worked before because global_CMakeLists.txt also included AbseilInstallDirs

PiperOrigin-RevId: 240206409

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c254dc6cade8a263f3f97fb1417d92fe5235ff32 by Jon Cohen <cohenjon@google.com>:

Fix logic for when we create the variant_exception_safety_test in CMake.  Currently we are only running in on gcc > 4.9, when we want it run on every compiler except gcc <= 4.8

PiperOrigin-RevId: 240194174

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01518006b351d3670ba1d349cfbcb7dd6f3a8b84 by CJ Johnson <johnsoncj@google.com>:

Removes old implementation warning comment now that InlinedVector has an implementation detail file

PiperOrigin-RevId: 240167265

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eb05355ae8c7397752ab7a65afc9e0a99472ba9d by Jon Cohen <cohenjon@google.com>:

Remove the forward declaration of Span

PiperOrigin-RevId: 240156660

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b7e75aa3933d6e79dd086821cf58d15e72f476f4 by Jon Cohen <cohenjon@google.com>:

Prepare CMake install rule for LTS releases:
  * Remove the warning against installing in system install locations
  * Insert versioning to keep different LTS installs from colliding.  Headers are installed in <prefix>/absl_$version/include, .a files in <prefix>/absl_$version/lib, and config files in <prefix>/absl_$version/lib/cmake

PiperOrigin-RevId: 240153986

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de63488ab6236e041f08260794b0b634a2b8ed16 by CJ Johnson <johnsoncj@google.com>:

Reduce reader confusion by using std::addressof(...) even when the type is known to not overload operator&(...)

PiperOrigin-RevId: 240131902
GitOrigin-RevId: f6c627ce4470a814adc377947b58346eef69a4c9
Change-Id: I95dbbacaaf65aceeeca9e9bee5fd9ea456225f62

1 files changed, 7 insertions, 12 deletions

diff --git a/absl/container/inlined_vector.h b/absl/container/inlined_vector.h
index 77988058e913..bd4ed6667ad2 100644
--- a/absl/container/inlined_vector.h
+++ b/absl/container/inlined_vector.h
@@ -454,7 +454,7 @@ class InlinedVector {
   // Overload of `InlinedVector::operator=()` to replace the contents of the
   // inlined vector with the contents of `other`.
   InlinedVector& operator=(const InlinedVector& other) {
-    if (ABSL_PREDICT_FALSE(this == &other)) return *this;
+    if (ABSL_PREDICT_FALSE(this == std::addressof(other))) return *this;
 
     // Optimized to avoid reallocation.
     // Prefer reassignment to copy construction for elements.
@@ -475,7 +475,7 @@ class InlinedVector {
   // NOTE: As a result of calling this overload, `other` may be empty or it's
   // contents may be left in a moved-from state.
   InlinedVector& operator=(InlinedVector&& other) {
-    if (ABSL_PREDICT_FALSE(this == &other)) return *this;
+    if (ABSL_PREDICT_FALSE(this == std::addressof(other))) return *this;
 
     if (other.allocated()) {
       clear();
@@ -840,7 +840,7 @@ class InlinedVector {
   //
   // Swaps the contents of this inlined vector with the contents of `other`.
   void swap(InlinedVector& other) {
-    if (ABSL_PREDICT_FALSE(this == &other)) return;
+    if (ABSL_PREDICT_FALSE(this == std::addressof(other))) return;
 
     SwapImpl(other);
   }
@@ -864,7 +864,8 @@ class InlinedVector {
   }
 
   void init_allocation(const Allocation& allocation) {
-    new (&storage_.rep_.allocation_storage.allocation) Allocation(allocation);
+    new (static_cast<void*>(std::addressof(
+        storage_.rep_.allocation_storage.allocation))) Allocation(allocation);
   }
 
   // TODO(absl-team): investigate whether the reinterpret_cast is appropriate.
@@ -1154,7 +1155,7 @@ class InlinedVector {
     if (!allocated() && !other.allocated()) {
       // Both inlined: swap up to smaller size, then move remaining elements.
       InlinedVector* a = this;
-      InlinedVector* b = &other;
+      InlinedVector* b = std::addressof(other);
       if (size() < other.size()) {
         swap(a, b);
       }
@@ -1186,7 +1187,7 @@ class InlinedVector {
     // pointer/capacity into the originally inlined vector and swap
     // the tags.
     InlinedVector* a = this;
-    InlinedVector* b = &other;
+    InlinedVector* b = std::addressof(other);
     if (a->allocated()) {
       swap(a, b);
     }
@@ -1305,10 +1306,4 @@ auto AbslHashValue(H h, const InlinedVector<TheT, TheN, TheA>& v) -> H {
 }
 }  // namespace absl
 
-// -----------------------------------------------------------------------------
-// Implementation of InlinedVector
-//
-// Do not depend on any below implementation details!
-// -----------------------------------------------------------------------------
-
 #endif  // ABSL_CONTAINER_INLINED_VECTOR_H_