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75 lines
2.6 KiB
Diff
75 lines
2.6 KiB
Diff
From 101b6199f33a396b5758057ca10b8f9c8d8e8855 Mon Sep 17 00:00:00 2001
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From: Antoine Pitrou <antoine@python.org>
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Date: Tue, 19 Jul 2022 16:40:28 +0200
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Subject: [PATCH] Fix #9947: make the ABI identical between debug and non-debug
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builds
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---
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src/google/protobuf/message_lite.cc | 8 ++------
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src/google/protobuf/metadata_lite.h | 13 ++++++++++---
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2 files changed, 12 insertions(+), 9 deletions(-)
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diff --git a/src/google/protobuf/message_lite.cc b/src/google/protobuf/message_lite.cc
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index 3a1b67bf6..da66c1965 100644
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--- a/src/google/protobuf/message_lite.cc
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+++ b/src/google/protobuf/message_lite.cc
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@@ -520,18 +520,14 @@ void GenericTypeHandler<std::string>::Merge(const std::string& from,
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*to = from;
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}
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-// Non-inline implementations of InternalMetadata routines
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-#if defined(NDEBUG) || defined(_MSC_VER)
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-// for opt and MSVC builds, the destructor is defined in the header.
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-#else
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+// Non-inline implementations of InternalMetadata destructor
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// This is moved out of the header because the GOOGLE_DCHECK produces a lot of code.
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-InternalMetadata::~InternalMetadata() {
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+void InternalMetadata::CheckedDestruct() {
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if (HasMessageOwnedArenaTag()) {
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GOOGLE_DCHECK(!HasUnknownFieldsTag());
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delete reinterpret_cast<Arena*>(ptr_ - kMessageOwnedArenaTagMask);
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}
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}
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-#endif
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// Non-inline variants of std::string specializations for
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// various InternalMetadata routines.
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diff --git a/src/google/protobuf/metadata_lite.h b/src/google/protobuf/metadata_lite.h
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index 11faba69f..0c31517f0 100644
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--- a/src/google/protobuf/metadata_lite.h
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+++ b/src/google/protobuf/metadata_lite.h
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@@ -74,15 +74,19 @@ class PROTOBUF_EXPORT InternalMetadata {
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GOOGLE_DCHECK(!is_message_owned || arena != nullptr);
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}
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-#if defined(NDEBUG) || defined(_MSC_VER)
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+ // To keep the ABI identical between debug and non-debug builds,
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+ // the destructor is always defined here even though it may delegate
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+ // to a non-inline private method.
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+ // (see https://github.com/protocolbuffers/protobuf/issues/9947)
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~InternalMetadata() {
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+#if defined(NDEBUG) || defined(_MSC_VER)
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if (HasMessageOwnedArenaTag()) {
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delete reinterpret_cast<Arena*>(ptr_ - kMessageOwnedArenaTagMask);
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}
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- }
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#else
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- ~InternalMetadata();
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+ CheckedDestruct();
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#endif
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+ }
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template <typename T>
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void Delete() {
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@@ -261,6 +265,9 @@ class PROTOBUF_EXPORT InternalMetadata {
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PROTOBUF_NOINLINE void DoSwap(T* other) {
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mutable_unknown_fields<T>()->Swap(other);
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}
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+
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+ // Private helper with debug checks for ~InternalMetadata()
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+ void CheckedDestruct();
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};
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// String Template specializations.
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--
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2.40.1
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