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Export of internal Abseil changes.

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1edfe05ddddca43e7650b2d790df7c8498c0e588 by Abseil Team <absl-team@google.com>:

Adding an assert to catch various misuses of std::optional.

PiperOrigin-RevId: 249427865

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45463bbb7e59dfbc584b2f024368a63db98bd7a8 by CJ Johnson <johnsoncj@google.com>:

Migrates internal member function GetAllocator() to GetAllocPtr() and changes the return type to pointer instead of reference to avoid unnecessary copy in DestroyElements(...)

PiperOrigin-RevId: 249319571

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507835be22af85676143ee0c43a80a52bc32094c by Abseil Team <absl-team@google.com>:

Fix -Wstring-conversion in GetEnvVar (Windows implementation).

PiperOrigin-RevId: 249201897
GitOrigin-RevId: 1edfe05ddddca43e7650b2d790df7c8498c0e588
Change-Id: I9300131887ee507cf80d399c724cf87341e4f11a
This commit is contained in:
Abseil Team 2019-05-22 05:06:50 -07:00 • committed by Derek Mauro
parent a18fc7461e
commit ce65f5ac3c
4 changed files with 31 additions and 31 deletions
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4
absl/types/optional.h
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@ -421,7 +421,9 @@ class optional : private optional_internal::optional_data<T>,
//
// Accesses the underlying `T` value of an `optional`. If the `optional` is
// empty, behavior is undefined.
constexpr const T& operator*() const & { return reference(); }
constexpr const T& operator*() const& {
return ABSL_ASSERT(this->engaged_), reference();
}
T& operator*() & {
assert(this->engaged_);
return reference();