5 files changed, 36 insertions, 12 deletions
diff --git a/absl/strings/CMakeLists.txt b/absl/strings/CMakeLists.txt
index d3393a39eb46..8515ec2b70f9 100644
--- a/absl/strings/CMakeLists.txt
+++ b/absl/strings/CMakeLists.txt
@@ -501,6 +501,8 @@ absl_cc_library(
     "internal/pow10_helper.h"
   SRCS
     "internal/pow10_helper.cc"
+  COPTS
+    ${ABSL_TEST_COPTS}
   TESTONLY
 )
 
diff --git a/absl/strings/escaping.cc b/absl/strings/escaping.cc
index bc8307e1d0ad..0d336e3ff691 100644
--- a/absl/strings/escaping.cc
+++ b/absl/strings/escaping.cc
@@ -1055,10 +1055,10 @@ std::string Utf8SafeCHexEscape(absl::string_view src) {
 }
 
 // ----------------------------------------------------------------------
-// ptrdiff_t Base64Unescape() - base64 decoder
-// ptrdiff_t Base64Escape() - base64 encoder
-// ptrdiff_t WebSafeBase64Unescape() - Google's variation of base64 decoder
-// ptrdiff_t WebSafeBase64Escape() - Google's variation of base64 encoder
+// Base64Unescape() - base64 decoder
+// Base64Escape() - base64 encoder
+// WebSafeBase64Unescape() - Google's variation of base64 decoder
+// WebSafeBase64Escape() - Google's variation of base64 encoder
 //
 // Check out
 // http://tools.ietf.org/html/rfc2045 for formal description, but what we
@@ -1096,6 +1096,20 @@ void WebSafeBase64Escape(absl::string_view src, std::string* dest) {
                        src.size(), dest, false, kWebSafeBase64Chars);
 }
 
+std::string Base64Escape(absl::string_view src) {
+  std::string dest;
+  Base64EscapeInternal(reinterpret_cast<const unsigned char*>(src.data()),
+                       src.size(), &dest, true, kBase64Chars);
+  return dest;
+}
+
+std::string WebSafeBase64Escape(absl::string_view src) {
+  std::string dest;
+  Base64EscapeInternal(reinterpret_cast<const unsigned char*>(src.data()),
+                       src.size(), &dest, false, kWebSafeBase64Chars);
+  return dest;
+}
+
 std::string HexStringToBytes(absl::string_view from) {
   std::string result;
   const auto num = from.size() / 2;
diff --git a/absl/strings/escaping.h b/absl/strings/escaping.h
index fd9be786a60e..198b934875e5 100644
--- a/absl/strings/escaping.h
+++ b/absl/strings/escaping.h
@@ -132,16 +132,18 @@ bool WebSafeBase64Unescape(absl::string_view src, std::string* dest);
 
 // Base64Escape()
 //
-// Encodes a `src` string into a `dest` buffer using base64 encoding, with
-// padding characters. This function conforms with RFC 4648 section 4 (base64).
+// Encodes a `src` string into a base64-encoded string, with padding characters.
+// This function conforms with RFC 4648 section 4 (base64).
 void Base64Escape(absl::string_view src, std::string* dest);
+std::string Base64Escape(absl::string_view src);
 
 // WebSafeBase64Escape()
 //
-// Encodes a `src` string into a `dest` buffer using '-' instead of '+' and
-// '_' instead of '/', and without padding. This function conforms with RFC 4648
-// section 5 (base64url).
+// Encodes a `src` string into a base64-like string, using '-' instead of '+'
+// and '_' instead of '/', and without padding. This function conforms with RFC
+// 4648 section 5 (base64url).
 void WebSafeBase64Escape(absl::string_view src, std::string* dest);
+std::string WebSafeBase64Escape(absl::string_view src);
 
 // HexStringToBytes()
 //
diff --git a/absl/strings/escaping_test.cc b/absl/strings/escaping_test.cc
index d433b4c5453e..6a633cdc5d20 100644
--- a/absl/strings/escaping_test.cc
+++ b/absl/strings/escaping_test.cc
@@ -556,6 +556,7 @@ void TestEscapeAndUnescape() {
     StringType encoded("this junk should be ignored");
     absl::Base64Escape(tc.plaintext, &encoded);
     EXPECT_EQ(encoded, tc.cyphertext);
+    EXPECT_EQ(absl::Base64Escape(tc.plaintext), tc.cyphertext);
 
     StringType decoded("this junk should be ignored");
     EXPECT_TRUE(absl::Base64Unescape(encoded, &decoded));
@@ -574,6 +575,7 @@ void TestEscapeAndUnescape() {
     encoded = "this junk should be ignored";
     absl::WebSafeBase64Escape(tc.plaintext, &encoded);
     EXPECT_EQ(encoded, websafe);
+    EXPECT_EQ(absl::WebSafeBase64Escape(tc.plaintext), websafe);
 
     // Let's try the std::string version of the decoder
     decoded = "this junk should be ignored";
@@ -586,6 +588,7 @@ void TestEscapeAndUnescape() {
     StringType buffer;
     absl::WebSafeBase64Escape(tc.plaintext, &buffer);
     EXPECT_EQ(tc.cyphertext, buffer);
+    EXPECT_EQ(absl::WebSafeBase64Escape(tc.plaintext), tc.cyphertext);
   }
 
   // Verify the behavior when decoding bad data
diff --git a/absl/strings/internal/str_format/convert_test.cc b/absl/strings/internal/str_format/convert_test.cc
index 99cc0afe4eb3..3b4d4b0c154d 100644
--- a/absl/strings/internal/str_format/convert_test.cc
+++ b/absl/strings/internal/str_format/convert_test.cc
@@ -1,6 +1,7 @@
 #include <errno.h>
 #include <stdarg.h>
 #include <stdio.h>
+#include <cctype>
 #include <cmath>
 #include <string>
 
@@ -32,7 +33,9 @@ std::string LengthModFor(long long) { return "ll"; }           // NOLINT
 std::string LengthModFor(unsigned long long) { return "ll"; }  // NOLINT
 
 std::string EscCharImpl(int v) {
-  if (isprint(v)) return std::string(1, static_cast<char>(v));
+  if (std::isprint(static_cast<unsigned char>(v))) {
+    return std::string(1, static_cast<char>(v));
+  }
   char buf[64];
   int n = snprintf(buf, sizeof(buf), "\\%#.2x",
                    static_cast<unsigned>(v & 0xff));
@@ -155,7 +158,7 @@ TEST_F(FormatConvertTest, StringPrecision) {
 }
 
 TEST_F(FormatConvertTest, Pointer) {
-#if _MSC_VER
+#ifdef _MSC_VER
   // MSVC's printf implementation prints pointers differently. We can't easily
   // compare our implementation to theirs.
   return;
@@ -390,7 +393,7 @@ TEST_F(FormatConvertTest, Uint128) {
 }
 
 TEST_F(FormatConvertTest, Float) {
-#if _MSC_VER
+#ifdef _MSC_VER
   // MSVC has a different rounding policy than us so we can't test our
   // implementation against the native one there.
   return;