Export of internal Abseil changes.

--
ab1a58c85a462884413ec0022dc1fff19ccb8602 by Abseil Team <absl-team@google.com>:

Clarified the documentation in str_format.h to say that use of absl::FormatSpec
is ok for wrapper functions. Added tests that express this.

PiperOrigin-RevId: 247657991

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fef9481e58d579f1514babcb960ca60a51883fd8 by CJ Johnson <johnsoncj@google.com>:

Adds exception safety tests for InlinedVector::InlinedVector() and InlinedVector::InlinedVector(const allocator_type&).

PiperOrigin-RevId: 247617048

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ef3217e1cd1e9a6ff5f2025e061b8ce3735af78f by Abseil Team <absl-team@google.com>:

Internal change.

PiperOrigin-RevId: 247614063

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ed4c3345c4a04d8ec5c9e627058f17fce55925b1 by CJ Johnson <johnsoncj@google.com>:

Update InlinedVector::clear()

Introduces inlined_vector_exception_safety_test with the first test (clear), adds new benchmarks (for clear), and updates the implementation of clear.

PiperOrigin-RevId: 247496049

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144a3a77c93bc8b2226da6f4b56166ee3d9868de by Derek Mauro <dmauro@google.com>:

Internal change

PiperOrigin-RevId: 247482532

--
286bbb89e154d5424955b644edad5fe04be487f8 by Derek Mauro <dmauro@google.com>:

Add scripts to run ASAN and TSAN on CI.

PiperOrigin-RevId: 247479658
GitOrigin-RevId: ab1a58c85a462884413ec0022dc1fff19ccb8602
Change-Id: Ief4c5a62587d0c59d405735df469d498aa6bf101

1 files changed, 28 insertions, 0 deletions

diff --git a/absl/container/internal/inlined_vector.h b/absl/container/internal/inlined_vector.h
index 6a5a75b..4589ce0 100644
--- a/absl/container/internal/inlined_vector.h
+++ b/absl/container/internal/inlined_vector.h
@@ -16,6 +16,7 @@
 #define ABSL_CONTAINER_INTERNAL_INLINED_VECTOR_INTERNAL_H_
 
 #include <cstddef>
+#include <cstring>
 #include <iterator>
 #include <memory>
 #include <utility>
@@ -31,6 +32,33 @@ using IsAtLeastForwardIterator = std::is_convertible<
     typename std::iterator_traits<Iterator>::iterator_category,
     std::forward_iterator_tag>;
 
+template <typename AllocatorType, typename ValueType, typename SizeType>
+void DestroyElements(AllocatorType alloc, ValueType* destroy_first,
+                     SizeType destroy_size) {
+  using AllocatorTraits = std::allocator_traits<AllocatorType>;
+
+  // Destroys `destroy_size` elements from `destroy_first`.
+  //
+  // Destroys the range
+  //   [`destroy_first`, `destroy_first + destroy_size`).
+  //
+  // NOTE: We assume destructors do not throw and thus make no attempt to roll
+  // back.
+  for (SizeType i = 0; i < destroy_size; ++i) {
+    AllocatorTraits::destroy(alloc, destroy_first + i);
+  }
+
+#ifndef NDEBUG
+  // Overwrite unused memory with `0xab` so we can catch uninitialized usage.
+  //
+  // Cast to `void*` to tell the compiler that we don't care that we might be
+  // scribbling on a vtable pointer.
+  void* memory = reinterpret_cast<void*>(destroy_first);
+  size_t memory_size = sizeof(ValueType) * destroy_size;
+  std::memset(memory, 0xab, memory_size);
+#endif  // NDEBUG
+}
+
 template <typename T, size_t N, typename A>
 class Storage {
  public: