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Export of internal Abseil changes.

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ffe43f972f956e3f9a8fb7b68993d243ba8f79fb by Abseil Team <absl-team@google.com>:

Replace usage of soon-to-be-deprecated http_archive rule with Skylark equivalent
https://github.com/abseil/abseil-cpp/pull/138

PiperOrigin-RevId: 204939972

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24021d7aec96ed013333760fba590eba5a9ddf63 by Abseil Team <absl-team@google.com>:

Remove incorrect constraint that StrSplit only works on std::strings; rather, it works on anything string-like.

PiperOrigin-RevId: 204761431

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ce61d3b0ac163caa1156817f3d1a997d9376a3f3 by Derek Mauro <dmauro@google.com>:

Support s390/s390x in examine_stack.cc (GitHub issue #135).
This is UNTESTED (no machine to test on).

PiperOrigin-RevId: 204756692

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68ecab659a95d713c4342fe9e8008c4cdf6abfc1 by Derek Mauro <dmauro@google.com>:

Update WORKSPACE.bazel Gogole Test dependency, remove the unused RE2 dependency.

PiperOrigin-RevId: 204741814

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891e185522f0934e3b48a75617be5fc859d75dbd by Derek Mauro <dmauro@google.com>:

Fix endian_test.cc on big endian platforms.
GitHub issue #135

PiperOrigin-RevId: 204738726

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9becfa12fbb525cd97e5695b94677bd3ea3f61b0 by Abseil Team <absl-team@google.com>:

Improve error messages in absl::variant by splitting up the conditions in the valid type static_assert.

This makes it slightly easier to determine what type is causing issues.

PiperOrigin-RevId: 204508430
GitOrigin-RevId: ffe43f972f956e3f9a8fb7b68993d243ba8f79fb
Change-Id: Icc5e4e8cd1a4cea98dfbed794cd992b734812e1d
This commit is contained in:
Abseil Team 2018-07-17 11:07:18 -07:00 • committed by Ashley Hedberg
parent f826f1d489
commit e0def7473e
5 changed files with 24 additions and 39 deletions
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15
absl/types/variant.h
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@ -449,14 +449,19 @@ constexpr bool operator!=(monostate, monostate) noexcept { return false; }
//------------------------------------------------------------------------------
template <typename T0, typename... Tn>
class variant<T0, Tn...> : private variant_internal::VariantBase<T0, Tn...> {
static_assert(absl::conjunction<std::is_object<T0>,
std::is_object<Tn>...>::value,
"Attempted to instantiate a variant containing a non-object "
"type.");
// Intentionally not qualifing `negation` with `absl::` to work around a bug
// in MSVC 2015 with inline namespace and variadic template.
static_assert(absl::conjunction<std::is_object<T0>, std::is_object<Tn>...,
negation<std::is_array<T0> >,
negation<std::is_array<Tn> >...,
std::is_nothrow_destructible<T0>,
static_assert(absl::conjunction<negation<std::is_array<T0> >,
negation<std::is_array<Tn> >...>::value,
"Attempted to instantiate a variant containing an array type.");
static_assert(absl::conjunction<std::is_nothrow_destructible<T0>,
std::is_nothrow_destructible<Tn>...>::value,
"Attempted to instantiate a variant with an unsupported type.");
"Attempted to instantiate a variant containing a non-nothrow "
"destructible type.");
friend struct variant_internal::VariantCoreAccess;