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-rw-r--r--Firestore/third_party/abseil-cpp/absl/strings/CMakeLists.txt5
-rw-r--r--Firestore/third_party/abseil-cpp/absl/strings/string_view.h2
-rw-r--r--Firestore/third_party/abseil-cpp/absl/strings/string_view_test.cc32
3 files changed, 33 insertions, 6 deletions
diff --git a/Firestore/third_party/abseil-cpp/absl/strings/CMakeLists.txt b/Firestore/third_party/abseil-cpp/absl/strings/CMakeLists.txt
index dcd4974..83cb934 100644
--- a/Firestore/third_party/abseil-cpp/absl/strings/CMakeLists.txt
+++ b/Firestore/third_party/abseil-cpp/absl/strings/CMakeLists.txt
@@ -35,6 +35,7 @@ list(APPEND STRINGS_INTERNAL_HEADERS
"internal/memutil.h"
"internal/ostringstream.h"
"internal/resize_uninitialized.h"
+ "internal/stl_type_traits.h"
"internal/str_join_internal.h"
"internal/str_split_internal.h"
"internal/utf8.h"
@@ -49,6 +50,7 @@ list(APPEND STRINGS_SRC
"internal/memutil.cc"
"internal/memutil.h"
"internal/utf8.cc"
+ "internal/ostringstream.cc"
"match.cc"
"numbers.cc"
"str_cat.cc"
@@ -205,12 +207,15 @@ absl_test(
# test ostringstream_test
set(OSTRINGSTREAM_TEST_SRC "internal/ostringstream_test.cc")
+set(OSTRINGSTREAM_TEST_PUBLIC_LIBRARIES absl::strings)
absl_test(
TARGET
ostringstream_test
SOURCES
${OSTRINGSTREAM_TEST_SRC}
+ PUBLIC_LIBRARIES
+ ${OSTRINGSTREAM_TEST_PUBLIC_LIBRARIES}
)
diff --git a/Firestore/third_party/abseil-cpp/absl/strings/string_view.h b/Firestore/third_party/abseil-cpp/absl/strings/string_view.h
index c3acd72..ddc8934 100644
--- a/Firestore/third_party/abseil-cpp/absl/strings/string_view.h
+++ b/Firestore/third_party/abseil-cpp/absl/strings/string_view.h
@@ -419,7 +419,7 @@ class string_view {
size_type rfind(string_view s, size_type pos = npos) const
noexcept;
- // Overload of `string_view::rfind()` for finding the given character `c`
+ // Overload of `string_view::rfind()` for finding the last given character `c`
// within the `string_view`.
size_type rfind(char c, size_type pos = npos) const noexcept;
diff --git a/Firestore/third_party/abseil-cpp/absl/strings/string_view_test.cc b/Firestore/third_party/abseil-cpp/absl/strings/string_view_test.cc
index 13fc214..3077d24 100644
--- a/Firestore/third_party/abseil-cpp/absl/strings/string_view_test.cc
+++ b/Firestore/third_party/abseil-cpp/absl/strings/string_view_test.cc
@@ -684,8 +684,11 @@ TEST(StringViewTest, TruncSubstr) {
}
TEST(StringViewTest, UTF8) {
- EXPECT_EQ(strlen("á"), absl::string_view("á á").find_first_of(" "));
- EXPECT_EQ(strlen("á"), absl::string_view("á á").find_first_of(" \t"));
+ std::string utf8 = "\u00E1";
+ std::string utf8_twice = utf8 + " " + utf8;
+ int utf8_len = strlen(utf8.data());
+ EXPECT_EQ(utf8_len, absl::string_view(utf8_twice).find_first_of(" "));
+ EXPECT_EQ(utf8_len, absl::string_view(utf8_twice).find_first_of(" \t"));
}
TEST(StringViewTest, FindConformance) {
@@ -796,11 +799,25 @@ TEST(StringViewTest, FrontBackSingleChar) {
EXPECT_EQ(&c, &csp.back());
}
+// `std::string_view::string_view(const char*)` calls
+// `std::char_traits<char>::length(const char*)` to get the std::string length. In
+// libc++, it doesn't allow `nullptr` in the constexpr context, with the error
+// "read of dereferenced null pointer is not allowed in a constant expression".
+// At run time, the behavior of `std::char_traits::length()` on `nullptr` is
+// undefined by the standard and usually results in crash with libc++. This
+// conforms to the standard, but `absl::string_view` implements a different
+// behavior for historical reasons. We work around tests that construct
+// `string_view` from `nullptr` when using libc++.
+#if !defined(ABSL_HAVE_STD_STRING_VIEW) || !defined(_LIBCPP_VERSION)
+#define ABSL_HAVE_STRING_VIEW_FROM_NULLPTR 1
+#endif // !defined(ABSL_HAVE_STD_STRING_VIEW) || !defined(_LIBCPP_VERSION)
+
TEST(StringViewTest, NULLInput) {
absl::string_view s;
EXPECT_EQ(s.data(), nullptr);
EXPECT_EQ(s.size(), 0);
+#ifdef ABSL_HAVE_STRING_VIEW_FROM_NULLPTR
s = absl::string_view(nullptr);
EXPECT_EQ(s.data(), nullptr);
EXPECT_EQ(s.size(), 0);
@@ -808,6 +825,7 @@ TEST(StringViewTest, NULLInput) {
// .ToString() on a absl::string_view with nullptr should produce the empty
// std::string.
EXPECT_EQ("", std::string(s));
+#endif // ABSL_HAVE_STRING_VIEW_FROM_NULLPTR
}
TEST(StringViewTest, Comparisons2) {
@@ -879,7 +897,9 @@ TEST(StringViewTest, NullSafeStringView) {
TEST(StringViewTest, ConstexprCompiles) {
constexpr absl::string_view sp;
+#ifdef ABSL_HAVE_STRING_VIEW_FROM_NULLPTR
constexpr absl::string_view cstr(nullptr);
+#endif
constexpr absl::string_view cstr_len("cstr", 4);
#if defined(ABSL_HAVE_STD_STRING_VIEW)
@@ -923,10 +943,12 @@ TEST(StringViewTest, ConstexprCompiles) {
constexpr absl::string_view::iterator const_end_empty = sp.end();
EXPECT_EQ(const_begin_empty, const_end_empty);
+#ifdef ABSL_HAVE_STRING_VIEW_FROM_NULLPTR
constexpr absl::string_view::iterator const_begin_nullptr = cstr.begin();
constexpr absl::string_view::iterator const_end_nullptr = cstr.end();
EXPECT_EQ(const_begin_nullptr, const_end_nullptr);
-#endif
+#endif // ABSL_HAVE_STRING_VIEW_FROM_NULLPTR
+#endif // !defined(__clang__) || ...
constexpr absl::string_view::iterator const_begin = cstr_len.begin();
constexpr absl::string_view::iterator const_end = cstr_len.end();
@@ -1042,11 +1064,11 @@ TEST(HugeStringView, TwoPointTwoGB) {
}
#endif // THREAD_SANITIZER
-#ifndef NDEBUG
+#if !defined(NDEBUG) && !defined(ABSL_HAVE_STD_STRING_VIEW)
TEST(NonNegativeLenTest, NonNegativeLen) {
EXPECT_DEATH_IF_SUPPORTED(absl::string_view("xyz", -1), "len <= kMaxSize");
}
-#endif // NDEBUG
+#endif // !defined(NDEBUG) && !defined(ABSL_HAVE_STD_STRING_VIEW)
class StringViewStreamTest : public ::testing::Test {
public: