Drop std:: qualification from integer types like uint64_t.

PiperOrigin-RevId: 643418422
Change-Id: Ib16cfef8ddedc8366df49ca75ab02eb60af08f26
diff --git a/absl/debugging/internal/demangle_rust.cc b/absl/debugging/internal/demangle_rust.cc
index 06ee7a4..6b686ab 100644
--- a/absl/debugging/internal/demangle_rust.cc
+++ b/absl/debugging/internal/demangle_rust.cc
@@ -503,7 +503,7 @@
 
  private:
   // Enumerates resumption points for ABSL_DEMANGLER_RECURSE calls.
-  enum ReturnAddress : std::uint8_t {
+  enum ReturnAddress : uint8_t {
     kInstantiatingCrate,
     kVendorSpecificSuffix,
     kIdentifierInUppercaseNamespace,
@@ -585,9 +585,9 @@
   // false if not everything fit into the output buffer.
   ABSL_MUST_USE_RESULT bool Emit(const char* token) {
     if (silence_depth_ > 0) return true;
-    const std::size_t token_length = std::strlen(token);
-    const std::size_t bytes_to_copy = token_length + 1;  // token and final NUL
-    if (static_cast<std::size_t>(out_end_ - out_) < bytes_to_copy) return false;
+    const size_t token_length = std::strlen(token);
+    const size_t bytes_to_copy = token_length + 1;  // token and final NUL
+    if (static_cast<size_t>(out_end_ - out_) < bytes_to_copy) return false;
     std::memcpy(out_, token, bytes_to_copy);
     out_ += token_length;
     return true;
@@ -604,7 +604,7 @@
     // because 999 > 256.  The bound will remain correct even if future
     // maintenance changes the type of the disambiguator variable.
     char digits[3 * sizeof(disambiguator)] = {};
-    std::size_t leading_digit_index = sizeof(digits) - 1;
+    size_t leading_digit_index = sizeof(digits) - 1;
     for (; disambiguator > 0; disambiguator /= 10) {
       digits[--leading_digit_index] =
           static_cast<char>('0' + disambiguator % 10);
@@ -909,7 +909,7 @@
 }  // namespace
 
 bool DemangleRustSymbolEncoding(const char* mangled, char* out,
-                                std::size_t out_size) {
+                                size_t out_size) {
   return RustSymbolParser(mangled, out, out + out_size).Parse();
 }
 
diff --git a/absl/debugging/internal/demangle_rust.h b/absl/debugging/internal/demangle_rust.h
index 1c19815..29e08ec 100644
--- a/absl/debugging/internal/demangle_rust.h
+++ b/absl/debugging/internal/demangle_rust.h
@@ -36,7 +36,7 @@
 // The demangling logic is under development; search for "not yet implemented"
 // in the .cc file to see where the gaps are.
 bool DemangleRustSymbolEncoding(const char* mangled, char* out,
-                                std::size_t out_size);
+                                size_t out_size);
 
 }  // namespace debugging_internal
 ABSL_NAMESPACE_END
diff --git a/absl/debugging/internal/demangle_rust_test.cc b/absl/debugging/internal/demangle_rust_test.cc
index 00bba78..e6b68ae 100644
--- a/absl/debugging/internal/demangle_rust_test.cc
+++ b/absl/debugging/internal/demangle_rust_test.cc
@@ -29,7 +29,7 @@
 // chars>, buffer_size) returns true and seems not to have overrun its output
 // buffer, returns the string written by DemangleRustSymbolEncoding; otherwise
 // returns an error message.
-std::string ResultOfDemangling(const char* mangled, std::size_t buffer_size) {
+std::string ResultOfDemangling(const char* mangled, size_t buffer_size) {
   // Fill the buffer with something other than NUL so we test whether Demangle
   // appends trailing NUL as expected.
   std::string buffer(buffer_size + 1, '~');
@@ -58,9 +58,9 @@
 #define EXPECT_DEMANGLING(mangled, plaintext) \
   do { \
     [] { \
-      constexpr std::size_t plenty_of_space = sizeof(plaintext) + 128; \
-      constexpr std::size_t just_enough_space = sizeof(plaintext); \
-      constexpr std::size_t one_byte_too_few = sizeof(plaintext) - 1; \
+      constexpr size_t plenty_of_space = sizeof(plaintext) + 128; \
+      constexpr size_t just_enough_space = sizeof(plaintext); \
+      constexpr size_t one_byte_too_few = sizeof(plaintext) - 1; \
       const char* expected_plaintext = plaintext; \
       const char* expected_error = "Failed parse"; \
       ASSERT_EQ(ResultOfDemangling(mangled, plenty_of_space), \
@@ -76,7 +76,7 @@
 // truncation of a real Rust symbol name).
 #define EXPECT_DEMANGLING_FAILS(mangled) \
     do { \
-      constexpr std::size_t plenty_of_space = 1024; \
+      constexpr size_t plenty_of_space = 1024; \
       const char* expected_error = "Failed parse"; \
       EXPECT_EQ(ResultOfDemangling(mangled, plenty_of_space), expected_error); \
     } while (0)
diff --git a/absl/debugging/internal/demangle_test.cc b/absl/debugging/internal/demangle_test.cc
index 5568681..5579221 100644
--- a/absl/debugging/internal/demangle_test.cc
+++ b/absl/debugging/internal/demangle_test.cc
@@ -1209,7 +1209,7 @@
 TEST(Demangle, SizeofPacks) {
   char tmp[80];
 
-  // template <std::size_t i> struct S {};
+  // template <size_t i> struct S {};
   //
   // template <class... T> auto f(T... p) -> S<sizeof...(T)> { return {}; }
   // template auto f<int, long>(int, long) -> S<2>;
diff --git a/absl/debugging/internal/utf8_for_code_point_test.cc b/absl/debugging/internal/utf8_for_code_point_test.cc
index d6817c7..dd0591a 100644
--- a/absl/debugging/internal/utf8_for_code_point_test.cc
+++ b/absl/debugging/internal/utf8_for_code_point_test.cc
@@ -25,32 +25,32 @@
 namespace {
 
 TEST(Utf8ForCodePointTest, RecognizesTheSmallestCodePoint) {
-  Utf8ForCodePoint utf8(std::uint64_t{0});
+  Utf8ForCodePoint utf8(uint64_t{0});
   ASSERT_EQ(utf8.length, 1);
   EXPECT_EQ(utf8.bytes[0], '\0');
 }
 
 TEST(Utf8ForCodePointTest, RecognizesAsciiSmallA) {
-  Utf8ForCodePoint utf8(std::uint64_t{'a'});
+  Utf8ForCodePoint utf8(uint64_t{'a'});
   ASSERT_EQ(utf8.length, 1);
   EXPECT_EQ(utf8.bytes[0], 'a');
 }
 
 TEST(Utf8ForCodePointTest, RecognizesTheLargestOneByteCodePoint) {
-  Utf8ForCodePoint utf8(std::uint64_t{0x7f});
+  Utf8ForCodePoint utf8(uint64_t{0x7f});
   ASSERT_EQ(utf8.length, 1);
   EXPECT_EQ(utf8.bytes[0], '\x7f');
 }
 
 TEST(Utf8ForCodePointTest, RecognizesTheSmallestTwoByteCodePoint) {
-  Utf8ForCodePoint utf8(std::uint64_t{0x80});
+  Utf8ForCodePoint utf8(uint64_t{0x80});
   ASSERT_EQ(utf8.length, 2);
   EXPECT_EQ(utf8.bytes[0], static_cast<char>(0xc2));
   EXPECT_EQ(utf8.bytes[1], static_cast<char>(0x80));
 }
 
 TEST(Utf8ForCodePointTest, RecognizesSmallNWithTilde) {
-  Utf8ForCodePoint utf8(std::uint64_t{0xf1});
+  Utf8ForCodePoint utf8(uint64_t{0xf1});
   ASSERT_EQ(utf8.length, 2);
   const char* want = "ñ";
   EXPECT_EQ(utf8.bytes[0], want[0]);
@@ -58,7 +58,7 @@
 }
 
 TEST(Utf8ForCodePointTest, RecognizesCapitalPi) {
-  Utf8ForCodePoint utf8(std::uint64_t{0x3a0});
+  Utf8ForCodePoint utf8(uint64_t{0x3a0});
   ASSERT_EQ(utf8.length, 2);
   const char* want = "Π";
   EXPECT_EQ(utf8.bytes[0], want[0]);
@@ -66,14 +66,14 @@
 }
 
 TEST(Utf8ForCodePointTest, RecognizesTheLargestTwoByteCodePoint) {
-  Utf8ForCodePoint utf8(std::uint64_t{0x7ff});
+  Utf8ForCodePoint utf8(uint64_t{0x7ff});
   ASSERT_EQ(utf8.length, 2);
   EXPECT_EQ(utf8.bytes[0], static_cast<char>(0xdf));
   EXPECT_EQ(utf8.bytes[1], static_cast<char>(0xbf));
 }
 
 TEST(Utf8ForCodePointTest, RecognizesTheSmallestThreeByteCodePoint) {
-  Utf8ForCodePoint utf8(std::uint64_t{0x800});
+  Utf8ForCodePoint utf8(uint64_t{0x800});
   ASSERT_EQ(utf8.length, 3);
   EXPECT_EQ(utf8.bytes[0], static_cast<char>(0xe0));
   EXPECT_EQ(utf8.bytes[1], static_cast<char>(0xa0));
@@ -81,7 +81,7 @@
 }
 
 TEST(Utf8ForCodePointTest, RecognizesTheChineseCharacterZhong1AsInZhong1Wen2) {
-  Utf8ForCodePoint utf8(std::uint64_t{0x4e2d});
+  Utf8ForCodePoint utf8(uint64_t{0x4e2d});
   ASSERT_EQ(utf8.length, 3);
   const char* want = "中";
   EXPECT_EQ(utf8.bytes[0], want[0]);
@@ -90,7 +90,7 @@
 }
 
 TEST(Utf8ForCodePointTest, RecognizesOneBeforeTheSmallestSurrogate) {
-  Utf8ForCodePoint utf8(std::uint64_t{0xd7ff});
+  Utf8ForCodePoint utf8(uint64_t{0xd7ff});
   ASSERT_EQ(utf8.length, 3);
   EXPECT_EQ(utf8.bytes[0], static_cast<char>(0xed));
   EXPECT_EQ(utf8.bytes[1], static_cast<char>(0x9f));
@@ -98,17 +98,17 @@
 }
 
 TEST(Utf8ForCodePointTest, RejectsTheSmallestSurrogate) {
-  Utf8ForCodePoint utf8(std::uint64_t{0xd800});
+  Utf8ForCodePoint utf8(uint64_t{0xd800});
   EXPECT_EQ(utf8.length, 0);
 }
 
 TEST(Utf8ForCodePointTest, RejectsTheLargestSurrogate) {
-  Utf8ForCodePoint utf8(std::uint64_t{0xdfff});
+  Utf8ForCodePoint utf8(uint64_t{0xdfff});
   EXPECT_EQ(utf8.length, 0);
 }
 
 TEST(Utf8ForCodePointTest, RecognizesOnePastTheLargestSurrogate) {
-  Utf8ForCodePoint utf8(std::uint64_t{0xe000});
+  Utf8ForCodePoint utf8(uint64_t{0xe000});
   ASSERT_EQ(utf8.length, 3);
   EXPECT_EQ(utf8.bytes[0], static_cast<char>(0xee));
   EXPECT_EQ(utf8.bytes[1], static_cast<char>(0x80));
@@ -116,7 +116,7 @@
 }
 
 TEST(Utf8ForCodePointTest, RecognizesTheLargestThreeByteCodePoint) {
-  Utf8ForCodePoint utf8(std::uint64_t{0xffff});
+  Utf8ForCodePoint utf8(uint64_t{0xffff});
   ASSERT_EQ(utf8.length, 3);
   EXPECT_EQ(utf8.bytes[0], static_cast<char>(0xef));
   EXPECT_EQ(utf8.bytes[1], static_cast<char>(0xbf));
@@ -124,7 +124,7 @@
 }
 
 TEST(Utf8ForCodePointTest, RecognizesTheSmallestFourByteCodePoint) {
-  Utf8ForCodePoint utf8(std::uint64_t{0x10000});
+  Utf8ForCodePoint utf8(uint64_t{0x10000});
   ASSERT_EQ(utf8.length, 4);
   EXPECT_EQ(utf8.bytes[0], static_cast<char>(0xf0));
   EXPECT_EQ(utf8.bytes[1], static_cast<char>(0x90));
@@ -133,7 +133,7 @@
 }
 
 TEST(Utf8ForCodePointTest, RecognizesTheJackOfHearts) {
-  Utf8ForCodePoint utf8(std::uint64_t{0x1f0bb});
+  Utf8ForCodePoint utf8(uint64_t{0x1f0bb});
   ASSERT_EQ(utf8.length, 4);
   const char* want = "🂻";
   EXPECT_EQ(utf8.bytes[0], want[0]);
@@ -143,7 +143,7 @@
 }
 
 TEST(Utf8ForCodePointTest, RecognizesTheLargestFourByteCodePoint) {
-  Utf8ForCodePoint utf8(std::uint64_t{0x10ffff});
+  Utf8ForCodePoint utf8(uint64_t{0x10ffff});
   ASSERT_EQ(utf8.length, 4);
   EXPECT_EQ(utf8.bytes[0], static_cast<char>(0xf4));
   EXPECT_EQ(utf8.bytes[1], static_cast<char>(0x8f));
@@ -152,21 +152,21 @@
 }
 
 TEST(Utf8ForCodePointTest, RejectsTheSmallestOverlargeCodePoint) {
-  Utf8ForCodePoint utf8(std::uint64_t{0x110000});
+  Utf8ForCodePoint utf8(uint64_t{0x110000});
   EXPECT_EQ(utf8.length, 0);
 }
 
 TEST(Utf8ForCodePointTest, RejectsAThroughlyOverlargeCodePoint) {
-  Utf8ForCodePoint utf8(std::uint64_t{0xffffffff00000000});
+  Utf8ForCodePoint utf8(uint64_t{0xffffffff00000000});
   EXPECT_EQ(utf8.length, 0);
 }
 
 TEST(Utf8ForCodePointTest, OkReturnsTrueForAValidCodePoint) {
-  EXPECT_TRUE(Utf8ForCodePoint(std::uint64_t{0}).ok());
+  EXPECT_TRUE(Utf8ForCodePoint(uint64_t{0}).ok());
 }
 
 TEST(Utf8ForCodePointTest, OkReturnsFalseForAnInvalidCodePoint) {
-  EXPECT_FALSE(Utf8ForCodePoint(std::uint64_t{0xffffffff00000000}).ok());
+  EXPECT_FALSE(Utf8ForCodePoint(uint64_t{0xffffffff00000000}).ok());
 }
 
 }  // namespace