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6ba0ec479b
Only needed until this PR is merged https://github.com/conan-io/conan-center-index/pull/27982
22 lines
838 B
Diff
22 lines
838 B
Diff
diff --git a/src/google/protobuf/port.h b/src/google/protobuf/port.h
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index 386ecc02a..32d260c42 100644
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--- a/src/google/protobuf/port.h
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+++ b/src/google/protobuf/port.h
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@@ -502,10 +502,16 @@ class alignas(8) GlobalEmptyStringConstexpr {
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// Nothing to init, or destroy.
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std::string* Init() const { return nullptr; }
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+ // Disable the optimization for MSVC.
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+ // There are some builds where the default constructed string can't be used as
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+ // `constinit` even though the constructor is `constexpr` and can be used
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+ // during constant evaluation.
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+#if !defined(_MSC_VER)
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template <typename T = std::string, bool = (T(), true)>
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static constexpr std::true_type HasConstexprDefaultConstructor(int) {
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return {};
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}
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+#endif
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static constexpr std::false_type HasConstexprDefaultConstructor(char) {
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return {};
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}
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