Export of internal Abseil changes.

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7fb969986d7d5a1b30233a94ae7ea29e1abf8937 by Greg Falcon <gfalcon@google.com>:

Fix whitespace in str_join.h.

PiperOrigin-RevId: 208082852

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85428003a8a29fbcd92c0b48708a69460eeb0e8f by Abseil Team <absl-team@google.com>:

Add missing back-ticks to the comments.

PiperOrigin-RevId: 207985417

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0bbac248d5649ac1d7bc71ff1025a11332fb2026 by Abseil Team <absl-team@google.com>:

Internal change.

PiperOrigin-RevId: 207927484

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f587324b99570b403b4626fb03fce16f0d950b05 by Abseil Team <absl-team@google.com>:

Update BaseCountedInstance to have comparison operators and allow them to be tracked by InstanceTracker.

PiperOrigin-RevId: 207919218

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d7f410e4f15328412941f16e25ba3735d5bdfda6 by Derek Mauro <dmauro@google.com>:

Internal import of GitHub PR #153
Removed "warning treated as error" flag from MSVC

PiperOrigin-RevId: 207908806

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59eefc78f8571ffc51cb636894015ce2580508d7 by Abseil Team <absl-team@google.com>:

Fix namespace references in examples from 'std::' to 'absl::'.

PiperOrigin-RevId: 207895230

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151df17b6544222e29913b034a1296c0e14374d5 by Abseil Team <absl-team@google.com>:

Internal Change

PiperOrigin-RevId: 207894949
GitOrigin-RevId: 7fb969986d7d5a1b30233a94ae7ea29e1abf8937
Change-Id: I00097afbe9610ddb3f2330a2a86dcffde7bb6675

3 files changed, 5 insertions, 2 deletions

diff --git a/absl/strings/BUILD.bazel b/absl/strings/BUILD.bazel
index 3a5f1332cda0..6caf8b975903 100644
--- a/absl/strings/BUILD.bazel
+++ b/absl/strings/BUILD.bazel
@@ -19,6 +19,7 @@ load(
     "ABSL_DEFAULT_COPTS",
     "ABSL_TEST_COPTS",
     "ABSL_EXCEPTIONS_FLAG",
+    "ABSL_EXCEPTIONS_FLAG_LINKOPTS",
 )
 
 package(
@@ -237,6 +238,7 @@ cc_test(
     size = "small",
     srcs = ["string_view_test.cc"],
     copts = ABSL_TEST_COPTS + ABSL_EXCEPTIONS_FLAG,
+    linkopts = ABSL_EXCEPTIONS_FLAG_LINKOPTS,
     visibility = ["//visibility:private"],
     deps = [
         ":strings",
diff --git a/absl/strings/str_join.h b/absl/strings/str_join.h
index bd4d0e1d9324..b0680e83feb5 100644
--- a/absl/strings/str_join.h
+++ b/absl/strings/str_join.h
@@ -52,6 +52,7 @@
 #include <iterator>
 #include <string>
 #include <tuple>
+#include <type_traits>
 #include <utility>
 
 #include "absl/base/macros.h"
diff --git a/absl/strings/string_view.h b/absl/strings/string_view.h
index 1537a3f84283..96101463125b 100644
--- a/absl/strings/string_view.h
+++ b/absl/strings/string_view.h
@@ -340,7 +340,7 @@ class string_view {
   //
   // Returns a "substring" of the `string_view` (at offset `pos` and length
   // `n`) as another string_view. This function throws `std::out_of_bounds` if
-  // `pos > size'.
+  // `pos > size`.
   string_view substr(size_type pos, size_type n = npos) const {
     if (ABSL_PREDICT_FALSE(pos > length_))
       base_internal::ThrowStdOutOfRange("absl::string_view::substr");
@@ -351,7 +351,7 @@ class string_view {
   // string_view::compare()
   //
   // Performs a lexicographical comparison between the `string_view` and
-  // another `absl::string_view), returning -1 if `this` is less than, 0 if
+  // another `absl::string_view`, returning -1 if `this` is less than, 0 if
   // `this` is equal to, and 1 if `this` is greater than the passed std::string
   // view. Note that in the case of data equality, a further comparison is made
   // on the respective sizes of the two `string_view`s to determine which is