Use auto types in folly to address -Wshorten-64-to-32

Summary: To make things easier to review, I've moved the auto types over here.

Reviewed By: Gownta

Differential Revision: D57686669

fbshipit-source-id: cbc89c9a9cce5850e0f5f30a769ae410e563821d

third-party/folly/src/folly/Benchmark.cpp

@@ -410,7 +410,7 @@ void printDefaultHeaderContents(std::string_view file, size_t columns) {
   } else {
     std::string truncatedFile = std::string(file.begin(), file.end());
     constexpr std::string_view overflowFilePrefix = "[...]";
-    const int overflow = truncatedFile.size() - maxFileNameChars;
+    const auto overflow = truncatedFile.size() - maxFileNameChars;
     truncatedFile.erase(0, overflow);
     truncatedFile.replace(0, overflowFilePrefix.size(), overflowFilePrefix);
     printHeaderContents(truncatedFile);

third-party/folly/src/folly/Subprocess.cpp

@@ -603,7 +603,7 @@ void Subprocess::closeInheritedFds(const Options::FdMap& fdActions) {
 #endif
   // If not running on Linux or if we failed to open /proc/self/fd, try to close
   // all possible open file descriptors.
-  for (int fd = sysconf(_SC_OPEN_MAX) - 1; fd >= 3; --fd) {
+  for (auto fd = sysconf(_SC_OPEN_MAX) - 1; fd >= 3; --fd) {
     if (fdActions.count(fd) == 0) {
       ::close(fd);
     }

third-party/folly/src/folly/debugging/symbolizer/SymbolizePrinter.cpp

@@ -112,7 +112,7 @@ void SymbolizePrinter::print(const SymbolizedFrame& frame) {
       doPrint(fileBuf);
 
       char buf[to_ascii_size_max_decimal<decltype(frame.location.line)>];
-      uint32_t n = to_ascii_decimal(buf, frame.location.line);
+      const auto n = to_ascii_decimal(buf, frame.location.line);
       doPrint(":");
       doPrint(StringPiece(buf, n));
     } else {

third-party/folly/src/folly/detail/Futex.cpp

@@ -61,7 +61,7 @@ namespace {
 #endif
 
 int nativeFutexWake(const void* addr, int count, uint32_t wakeMask) {
-  int rv = syscall(
+  const auto rv = syscall(
       __NR_futex,
       addr, /* addr1 */
       FUTEX_WAKE_BITSET | FUTEX_PRIVATE_FLAG, /* op */
@@ -123,7 +123,7 @@ FutexResult nativeFutexWaitImpl(
 
   // Unlike FUTEX_WAIT, FUTEX_WAIT_BITSET requires an absolute timeout
   // value - http://locklessinc.com/articles/futex_cheat_sheet/
-  int rv = syscall(
+  const auto rv = syscall(
       __NR_futex,
       addr, /* addr1 */
       op, /* op */

third-party/folly/src/folly/io/async/SSLContext.cpp

@@ -70,7 +70,7 @@ void configureProtocolVersion(SSL_CTX* ctx, SSLContext::SSLVersion version) {
       // do nothing
       break;
   }
-  int setMinProtoResult = SSL_CTX_set_min_proto_version(ctx, minVersion);
+  const auto setMinProtoResult = SSL_CTX_set_min_proto_version(ctx, minVersion);
   DCHECK(setMinProtoResult == 1)
       << sformat("unsupported min TLS protocol version: 0x{:04x}", minVersion);
 }
@@ -141,7 +141,7 @@ void SSLContext::setClientECCurvesList(
   }
   std::string ecCurvesList;
   join(":", ecCurves, ecCurvesList);
-  int rc = SSL_CTX_set1_curves_list(ctx_, ecCurvesList.c_str());
+  const auto rc = SSL_CTX_set1_curves_list(ctx_, ecCurvesList.c_str());
   if (rc == 0) {
     throw std::runtime_error("SSL_CTX_set1_curves_list " + getErrors());
   }
@@ -153,7 +153,7 @@ void SSLContext::setSupportedGroups(const std::vector<std::string>& groups) {
   }
   std::string groupsList;
   join(":", groups, groupsList);
-  int rc = SSL_CTX_set1_groups_list(ctx_, groupsList.c_str());
+  const auto rc = SSL_CTX_set1_groups_list(ctx_, groupsList.c_str());
   if (rc == 0) {
     throw std::runtime_error("SSL_CTX_set1_curves " + getErrors());
   }
@@ -201,15 +201,15 @@ void SSLContext::setX509VerifyParam(
 }
 
 void SSLContext::setCiphersOrThrow(const std::string& ciphers) {
-  int rc = SSL_CTX_set_cipher_list(ctx_, ciphers.c_str());
+  const auto rc = SSL_CTX_set_cipher_list(ctx_, ciphers.c_str());
   if (rc == 0) {
     throw std::runtime_error("SSL_CTX_set_cipher_list: " + getErrors());
   }
   providedCiphersString_ = ciphers;
 }
 
 void SSLContext::setSigAlgsOrThrow(const std::string& sigalgs) {
-  int rc = SSL_CTX_set1_sigalgs_list(ctx_, sigalgs.c_str());
+  const auto rc = SSL_CTX_set1_sigalgs_list(ctx_, sigalgs.c_str());
   if (rc == 0) {
     throw std::runtime_error("SSL_CTX_set1_sigalgs_list " + getErrors());
   }

third-party/folly/src/folly/io/async/test/AsyncUDPSocketGSOGROTest.cpp

@@ -169,7 +169,7 @@ class UDPAcceptor : public AsyncUDPServerSocket::Callback {
     if (params.gro == -1) {
       socket->write(client, data->clone());
     } else {
-      int total = data->length();
+      int64_t total = data->length();
       size_t offset = 0;
       while (total > 0) {
         auto size = (total > params.gro) ? params.gro : total;

third-party/folly/src/folly/io/async/test/EventBaseTestLib.h

@@ -80,7 +80,7 @@ FOLLY_ALWAYS_INLINE ssize_t writeToFD(int fd, size_t length) {
   auto bufv = std::vector<char>(length);
   auto buf = bufv.data();
   memset(buf, 'a', length);
-  ssize_t rc = write(fd, buf, length);
+  const auto rc = write(fd, buf, length);
   CHECK_EQ(rc, length);
   return rc;
 }
@@ -113,7 +113,7 @@ FOLLY_ALWAYS_INLINE size_t readUntilEmpty(int fd) {
   char buf[BUF_SIZE];
   size_t bytesRead = 0;
   while (true) {
-    int rc = read(fd, buf, sizeof(buf));
+    const auto rc = read(fd, buf, sizeof(buf));
     if (rc == 0) {
       CHECK(false) << "unexpected EOF";
     } else if (rc < 0) {

third-party/folly/src/folly/io/async/test/EventHandlerTest.cpp

@@ -278,7 +278,7 @@ class EventHandlerOobTest : public ::testing::Test {
 TEST_F(EventHandlerOobTest, EPOLLPRI) {
   auto clientOps = [](int fd) {
     char buffer[] = "banana";
-    int n = send(fd, buffer, strlen(buffer) + 1, MSG_OOB);
+    const auto n = send(fd, buffer, strlen(buffer) + 1, MSG_OOB);
     LOG(INFO) << "Client send finished";
     PCHECK(n > 0);
   };
@@ -293,7 +293,7 @@ TEST_F(EventHandlerOobTest, EPOLLPRI) {
     void handlerReady(uint16_t events) noexcept override {
       EXPECT_TRUE(EventHandler::EventFlags::PRI & events);
       std::array<char, 255> buffer;
-      int n = read(fd_, buffer.data(), buffer.size());
+      auto n = read(fd_, buffer.data(), buffer.size());
       //
       // NB: we sent 7 bytes, but only received 6. The last byte
       // has been stored in the OOB buffer.
@@ -322,13 +322,13 @@ TEST_F(EventHandlerOobTest, OOB_AND_NORMAL_DATA) {
     {
       // OOB buffer can only hold one byte in most implementations
       std::array<char, 2> buffer = {"X"};
-      int n = send(sockfd, buffer.data(), 1, MSG_OOB);
+      const auto n = send(sockfd, buffer.data(), 1, MSG_OOB);
       PCHECK(n > 0);
     }
 
     {
       std::array<char, 7> buffer = {"banana"};
-      int n = send(sockfd, buffer.data(), buffer.size(), 0);
+      const auto n = send(sockfd, buffer.data(), buffer.size(), 0);
       PCHECK(n > 0);
     }
   };
@@ -343,15 +343,15 @@ TEST_F(EventHandlerOobTest, OOB_AND_NORMAL_DATA) {
     void handlerReady(uint16_t events) noexcept override {
       std::array<char, 255> buffer;
       if (events & EventHandler::EventFlags::PRI) {
-        int n = recv(fd_, buffer.data(), buffer.size(), MSG_OOB);
+        const auto n = recv(fd_, buffer.data(), buffer.size(), MSG_OOB);
         EXPECT_EQ(1, n);
         EXPECT_EQ("X", std::string(buffer.data(), 1));
         registerHandler(EventHandler::EventFlags::READ);
         return;
       }
 
       if (events & EventHandler::EventFlags::READ) {
-        int n = recv(fd_, buffer.data(), buffer.size(), 0);
+        const auto n = recv(fd_, buffer.data(), buffer.size(), 0);
         EXPECT_EQ(7, n);
         EXPECT_EQ("banana", std::string(buffer.data()));
         eb_->terminateLoopSoon();
@@ -376,13 +376,13 @@ TEST_F(EventHandlerOobTest, SWALLOW_OOB) {
   auto clientOps = [](int sockfd) {
     {
       std::array<char, 2> buffer = {"X"};
-      int n = send(sockfd, buffer.data(), 1, MSG_OOB);
+      const auto n = send(sockfd, buffer.data(), 1, MSG_OOB);
       PCHECK(n > 0);
     }
 
     {
       std::array<char, 7> buffer = {"banana"};
-      int n = send(sockfd, buffer.data(), buffer.size(), 0);
+      const auto n = send(sockfd, buffer.data(), buffer.size(), 0);
       PCHECK(n > 0);
     }
   };
@@ -397,7 +397,7 @@ TEST_F(EventHandlerOobTest, SWALLOW_OOB) {
     void handlerReady(uint16_t events) noexcept override {
       std::array<char, 255> buffer;
       ASSERT_TRUE(events & EventHandler::EventFlags::READ);
-      int n = recv(fd_, buffer.data(), buffer.size(), 0);
+      const auto n = recv(fd_, buffer.data(), buffer.size(), 0);
       EXPECT_EQ(7, n);
       EXPECT_EQ("banana", std::string(buffer.data()));
     }

third-party/folly/src/folly/io/async/test/SSLContextTest.cpp

@@ -303,7 +303,8 @@ TEST_F(SSLContextTest, TestSetInvalidCiphersuite) {
 
 TEST_F(SSLContextTest, TestTLS13MinVersion) {
   SSLContext sslContext{SSLContext::SSLVersion::TLSv1_3};
-  int minProtoVersion = SSL_CTX_get_min_proto_version(sslContext.getSSLCtx());
+  const auto minProtoVersion =
+      SSL_CTX_get_min_proto_version(sslContext.getSSLCtx());
   EXPECT_EQ(minProtoVersion, TLS1_3_VERSION);
 }
 

third-party/folly/src/folly/io/async/test/TimeUtil.cpp

@@ -49,20 +49,20 @@ namespace folly {
 
 #ifdef __linux__
 static int getLinuxVersion(StringPiece release) {
-  auto dot1 = release.find('.');
+  const auto dot1 = release.find('.');
   if (dot1 == StringPiece::npos) {
     throw std::invalid_argument("could not find first dot");
   }
-  auto v1 = folly::to<int>(release.subpiece(0, dot1));
+  const auto v1 = folly::to<int>(release.subpiece(0, dot1));
 
-  auto dot2 = release.find('.', dot1 + 1);
+  const auto dot2 = release.find('.', dot1 + 1);
   if (dot2 == StringPiece::npos) {
     throw std::invalid_argument("could not find second dot");
   }
-  auto v2 = folly::to<int>(release.subpiece(dot1 + 1, dot2 - (dot1 + 1)));
+  const auto v2 = folly::to<int>(release.subpiece(dot1 + 1, dot2 - (dot1 + 1)));
 
-  int dash = release.find('-', dot2 + 1);
-  auto v3 = folly::to<int>(release.subpiece(dot2 + 1, dash - (dot2 + 1)));
+  const auto dash = release.find('-', dot2 + 1);
+  const auto v3 = folly::to<int>(release.subpiece(dot2 + 1, dash - (dot2 + 1)));
 
   return ((v1 * 1000 + v2) * 1000) + v3;
 }

third-party/folly/src/folly/io/test/IOBufTest.cpp

@@ -46,7 +46,7 @@ void prepend(std::unique_ptr<IOBuf>& buf, StringPiece str) {
 
 TEST(IOBuf, Simple) {
   unique_ptr<IOBuf> buf(IOBuf::create(100));
-  uint32_t cap = buf->capacity();
+  const auto cap = buf->capacity();
   EXPECT_LE(100, cap);
   EXPECT_EQ(0, buf->headroom());
   EXPECT_EQ(0, buf->length());

third-party/folly/src/folly/test/ConvBenchmark.cpp

@@ -347,8 +347,8 @@ unsigned u64ToAsciiTable(uint64_t value, char* dst) {
       "80818283848586878889"
       "90919293949596979899";
 
-  uint32_t const length = to_ascii_size_decimal(value);
-  uint32_t next = length - 1;
+  auto const length = to_ascii_size_decimal(value);
+  auto next = length - 1;
   while (value >= 100) {
     auto const i = (value % 100) * 2;
     value /= 100;

third-party/folly/src/folly/test/stl_tests/StlVectorTest.cpp

@@ -2325,10 +2325,10 @@ STL_TEST(
     a,
     p) {
   DataState<Vector> dsa(a);
-  int idx = distance(a.begin(), p);
-  auto am = a.get_allocator();
+  const auto idx = distance(a.begin(), p);
+  const auto am = a.get_allocator();
 
-  auto q = a.emplace(p, 44);
+  const auto q = a.emplace(p, 44);
 
   ASSERT_TRUE(am == a.get_allocator());
   ASSERT_EQ(idx, distance(a.begin(), q)) << "incorrect iterator returned";
@@ -2349,12 +2349,12 @@ STL_TEST(
     SKIP();
   }
   DataState<Vector> dsa(a);
-  int idx = distance(a.begin(), p);
+  const auto idx = distance(a.begin(), p);
   int tval = convertToInt(t);
   auto am = a.get_allocator();
   const auto& ct = t;
 
-  auto q = a.insert(p, ct);
+  const auto q = a.insert(p, ct);
 
   ASSERT_TRUE(am == a.get_allocator());
   ASSERT_EQ(idx, distance(a.begin(), q)) << "incorrect iterator returned";