https://bugs.gentoo.org/875584
https://github.com/protocolbuffers/protobuf/pull/10589

From 5f4a52d9bff7595ec47fb6727662a1cada3cd404 Mon Sep 17 00:00:00 2001
From: Mike Kruskal <mkruskal@google.com>
Date: Thu, 15 Sep 2022 10:23:23 -0700
Subject: [PATCH 3/7] Patching static assert test failure

--- a/src/google/protobuf/extension_set_unittest.cc
+++ b/src/google/protobuf/extension_set_unittest.cc
@@ -855,8 +855,10 @@ TEST(ExtensionSetTest, SpaceUsedExcludingSelf) {
     const size_t old_capacity =                                                \
         message->GetRepeatedExtension(unittest::repeated_##type##_extension)   \
             .Capacity();                                                       \
-    EXPECT_GE(old_capacity,                                                    \
-              (RepeatedFieldLowerClampLimit<cpptype, sizeof(void*)>()));       \
+    EXPECT_GE(                                                                 \
+        old_capacity,                                                          \
+        (RepeatedFieldLowerClampLimit<cpptype, std::max(sizeof(cpptype),       \
+                                                        sizeof(void*))>()));   \
     for (int i = 0; i < 16; ++i) {                                             \
       message->AddExtension(unittest::repeated_##type##_extension, value);     \
     }                                                                          \

From c94b66706bec17d918495f4715183a5eaf0f8044 Mon Sep 17 00:00:00 2001
From: Mike Kruskal <mkruskal@google.com>
Date: Thu, 15 Sep 2022 11:31:31 -0700
Subject: [PATCH 4/7] Test fixes for 32-bit architectures

--- a/src/google/protobuf/compiler/cpp/message_size_unittest.cc
+++ b/src/google/protobuf/compiler/cpp/message_size_unittest.cc
@@ -139,9 +139,9 @@ TEST(GeneratedMessageTest, OneStringSize) {
 
 TEST(GeneratedMessageTest, MoreStringSize) {
   struct MockGenerated : public MockMessageBase {  // 16 bytes
-    int has_bits[1];                               // 4 bytes
     int cached_size;                               // 4 bytes
     MockRepeatedPtrField data;                     // 24 bytes
+    // + 4 bytes padding
   };
   GOOGLE_CHECK_MESSAGE_SIZE(MockGenerated, 48);
   EXPECT_EQ(sizeof(protobuf_unittest::MoreString), sizeof(MockGenerated));
--- a/src/google/protobuf/io/zero_copy_stream_unittest.cc
+++ b/src/google/protobuf/io/zero_copy_stream_unittest.cc
@@ -720,6 +720,9 @@ TEST_F(IoTest, StringIo) {
 
 // Verifies that outputs up to kint32max can be created.
 TEST_F(IoTest, LargeOutput) {
+  // Filter out this test on 32-bit architectures.
+  if(sizeof(void*) < 8) return;
+
   std::string str;
   StringOutputStream output(&str);
   void* unused_data;
--- a/src/google/protobuf/repeated_field_unittest.cc
+++ b/src/google/protobuf/repeated_field_unittest.cc
@@ -429,14 +429,14 @@ TEST(RepeatedField, ReserveNothing) {
 
 TEST(RepeatedField, ReserveLowerClamp) {
   int clamped_value = internal::CalculateReserveSize<bool, sizeof(void*)>(0, 1);
-  EXPECT_GE(clamped_value, 8 / sizeof(bool));
+  EXPECT_GE(clamped_value, sizeof(void*) / sizeof(bool));
   EXPECT_EQ((internal::RepeatedFieldLowerClampLimit<bool, sizeof(void*)>()),
             clamped_value);
   // EXPECT_EQ(clamped_value, (internal::CalculateReserveSize<bool,
   // sizeof(void*)>( clamped_value, 2)));
 
   clamped_value = internal::CalculateReserveSize<int, sizeof(void*)>(0, 1);
-  EXPECT_GE(clamped_value, 8 / sizeof(int));
+  EXPECT_GE(clamped_value, sizeof(void*) / sizeof(int));
   EXPECT_EQ((internal::RepeatedFieldLowerClampLimit<int, sizeof(void*)>()),
             clamped_value);
   // EXPECT_EQ(clamped_value, (internal::CalculateReserveSize<int,
--- a/src/google/protobuf/util/time_util_test.cc
+++ b/src/google/protobuf/util/time_util_test.cc
@@ -48,15 +48,18 @@ using google::protobuf::Timestamp;
 namespace {
 
 TEST(TimeUtilTest, TimestampStringFormat) {
-  Timestamp begin, end;
-  EXPECT_TRUE(TimeUtil::FromString("0001-01-01T00:00:00Z", &begin));
-  EXPECT_EQ(TimeUtil::kTimestampMinSeconds, begin.seconds());
-  EXPECT_EQ(0, begin.nanos());
-  EXPECT_TRUE(TimeUtil::FromString("9999-12-31T23:59:59.999999999Z", &end));
-  EXPECT_EQ(TimeUtil::kTimestampMaxSeconds, end.seconds());
-  EXPECT_EQ(999999999, end.nanos());
-  EXPECT_EQ("0001-01-01T00:00:00Z", TimeUtil::ToString(begin));
-  EXPECT_EQ("9999-12-31T23:59:59.999999999Z", TimeUtil::ToString(end));
+  // These these are out of bounds for 32-bit architectures.
+  if(sizeof(time_t) >= sizeof(uint64_t)) {
+    Timestamp begin, end;
+    EXPECT_TRUE(TimeUtil::FromString("0001-01-01T00:00:00Z", &begin));
+    EXPECT_EQ(TimeUtil::kTimestampMinSeconds, begin.seconds());
+    EXPECT_EQ(0, begin.nanos());
+    EXPECT_TRUE(TimeUtil::FromString("9999-12-31T23:59:59.999999999Z", &end));
+    EXPECT_EQ(TimeUtil::kTimestampMaxSeconds, end.seconds());
+    EXPECT_EQ(999999999, end.nanos());
+    EXPECT_EQ("0001-01-01T00:00:00Z", TimeUtil::ToString(begin));
+    EXPECT_EQ("9999-12-31T23:59:59.999999999Z", TimeUtil::ToString(end));
+  }
 
   // Test negative timestamps.
   Timestamp time = TimeUtil::NanosecondsToTimestamp(-1);
@@ -94,9 +97,12 @@ TEST(TimeUtilTest, DurationStringFormat) {
   EXPECT_TRUE(TimeUtil::FromString("0001-01-01T00:00:00Z", &begin));
   EXPECT_TRUE(TimeUtil::FromString("9999-12-31T23:59:59.999999999Z", &end));
 
-  EXPECT_EQ("315537897599.999999999s", TimeUtil::ToString(end - begin));
+  // These these are out of bounds for 32-bit architectures.
+  if(sizeof(time_t) >= sizeof(uint64_t)) {
+    EXPECT_EQ("315537897599.999999999s", TimeUtil::ToString(end - begin));
+    EXPECT_EQ("-315537897599.999999999s", TimeUtil::ToString(begin - end));
+  }
   EXPECT_EQ(999999999, (end - begin).nanos());
-  EXPECT_EQ("-315537897599.999999999s", TimeUtil::ToString(begin - end));
   EXPECT_EQ(-999999999, (begin - end).nanos());
 
   // Generated output should contain 3, 6, or 9 fractional digits.