Replace MakeSpan helper with Span deduction guide

3 files changed, 74 insertions, 74 deletions

diff --git a/src/test/crypto_tests.cpp b/src/test/crypto_tests.cpp
index 1483bd3cb3..dfea73e87b 100644
--- a/src/test/crypto_tests.cpp
+++ b/src/test/crypto_tests.cpp
@@ -770,8 +770,8 @@ static void TestSHA3_256(const std::string& input, const std::string& output)
     int s1 = InsecureRandRange(in_bytes.size() + 1);
     int s2 = InsecureRandRange(in_bytes.size() + 1 - s1);
     int s3 = in_bytes.size() - s1 - s2;
-    sha.Write(MakeSpan(in_bytes).first(s1)).Write(MakeSpan(in_bytes).subspan(s1, s2));
-    sha.Write(MakeSpan(in_bytes).last(s3)).Finalize(out);
+    sha.Write(Span{in_bytes}.first(s1)).Write(Span{in_bytes}.subspan(s1, s2));
+    sha.Write(Span{in_bytes}.last(s3)).Finalize(out);
     BOOST_CHECK(std::equal(std::begin(out_bytes), std::end(out_bytes), out));
 }
 
diff --git a/src/test/net_tests.cpp b/src/test/net_tests.cpp
index 29938d4ede..f8fa26d907 100644
--- a/src/test/net_tests.cpp
+++ b/src/test/net_tests.cpp
@@ -386,9 +386,9 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
     s.SetVersion(s.GetVersion() | ADDRV2_FORMAT);
 
     // Valid IPv4.
-    s << MakeSpan(ParseHex("01"          // network type (IPv4)
-                           "04"          // address length
-                           "01020304")); // address
+    s << Span{ParseHex("01"          // network type (IPv4)
+                       "04"          // address length
+                       "01020304")}; // address
     s >> addr;
     BOOST_CHECK(addr.IsValid());
     BOOST_CHECK(addr.IsIPv4());
@@ -397,35 +397,35 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
     BOOST_REQUIRE(s.empty());
 
     // Invalid IPv4, valid length but address itself is shorter.
-    s << MakeSpan(ParseHex("01"      // network type (IPv4)
-                           "04"      // address length
-                           "0102")); // address
+    s << Span{ParseHex("01"      // network type (IPv4)
+                       "04"      // address length
+                       "0102")}; // address
     BOOST_CHECK_EXCEPTION(s >> addr, std::ios_base::failure, HasReason("end of data"));
     BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
     s.clear();
 
     // Invalid IPv4, with bogus length.
-    s << MakeSpan(ParseHex("01"          // network type (IPv4)
-                           "05"          // address length
-                           "01020304")); // address
+    s << Span{ParseHex("01"          // network type (IPv4)
+                       "05"          // address length
+                       "01020304")}; // address
     BOOST_CHECK_EXCEPTION(s >> addr, std::ios_base::failure,
                           HasReason("BIP155 IPv4 address with length 5 (should be 4)"));
     BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
     s.clear();
 
     // Invalid IPv4, with extreme length.
-    s << MakeSpan(ParseHex("01"          // network type (IPv4)
-                           "fd0102"      // address length (513 as CompactSize)
-                           "01020304")); // address
+    s << Span{ParseHex("01"          // network type (IPv4)
+                       "fd0102"      // address length (513 as CompactSize)
+                       "01020304")}; // address
     BOOST_CHECK_EXCEPTION(s >> addr, std::ios_base::failure,
                           HasReason("Address too long: 513 > 512"));
     BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
     s.clear();
 
     // Valid IPv6.
-    s << MakeSpan(ParseHex("02"                                  // network type (IPv6)
-                           "10"                                  // address length
-                           "0102030405060708090a0b0c0d0e0f10")); // address
+    s << Span{ParseHex("02"                                  // network type (IPv6)
+                       "10"                                  // address length
+                       "0102030405060708090a0b0c0d0e0f10")}; // address
     s >> addr;
     BOOST_CHECK(addr.IsValid());
     BOOST_CHECK(addr.IsIPv6());
@@ -434,10 +434,10 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
     BOOST_REQUIRE(s.empty());
 
     // Valid IPv6, contains embedded "internal".
-    s << MakeSpan(ParseHex(
+    s << Span{ParseHex(
         "02"                                  // network type (IPv6)
         "10"                                  // address length
-        "fd6b88c08724ca978112ca1bbdcafac2")); // address: 0xfd + sha256("bitcoin")[0:5] +
+        "fd6b88c08724ca978112ca1bbdcafac2")}; // address: 0xfd + sha256("bitcoin")[0:5] +
                                               // sha256(name)[0:10]
     s >> addr;
     BOOST_CHECK(addr.IsInternal());
@@ -446,44 +446,44 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
     BOOST_REQUIRE(s.empty());
 
     // Invalid IPv6, with bogus length.
-    s << MakeSpan(ParseHex("02"    // network type (IPv6)
-                           "04"    // address length
-                           "00")); // address
+    s << Span{ParseHex("02"    // network type (IPv6)
+                       "04"    // address length
+                       "00")}; // address
     BOOST_CHECK_EXCEPTION(s >> addr, std::ios_base::failure,
                           HasReason("BIP155 IPv6 address with length 4 (should be 16)"));
     BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
     s.clear();
 
     // Invalid IPv6, contains embedded IPv4.
-    s << MakeSpan(ParseHex("02"                                  // network type (IPv6)
-                           "10"                                  // address length
-                           "00000000000000000000ffff01020304")); // address
+    s << Span{ParseHex("02"                                  // network type (IPv6)
+                       "10"                                  // address length
+                       "00000000000000000000ffff01020304")}; // address
     s >> addr;
     BOOST_CHECK(!addr.IsValid());
     BOOST_REQUIRE(s.empty());
 
     // Invalid IPv6, contains embedded TORv2.
-    s << MakeSpan(ParseHex("02"                                  // network type (IPv6)
-                           "10"                                  // address length
-                           "fd87d87eeb430102030405060708090a")); // address
+    s << Span{ParseHex("02"                                  // network type (IPv6)
+                       "10"                                  // address length
+                       "fd87d87eeb430102030405060708090a")}; // address
     s >> addr;
     BOOST_CHECK(!addr.IsValid());
     BOOST_REQUIRE(s.empty());
 
     // TORv2, no longer supported.
-    s << MakeSpan(ParseHex("03"                      // network type (TORv2)
-                           "0a"                      // address length
-                           "f1f2f3f4f5f6f7f8f9fa")); // address
+    s << Span{ParseHex("03"                      // network type (TORv2)
+                       "0a"                      // address length
+                       "f1f2f3f4f5f6f7f8f9fa")}; // address
     s >> addr;
     BOOST_CHECK(!addr.IsValid());
     BOOST_REQUIRE(s.empty());
 
     // Valid TORv3.
-    s << MakeSpan(ParseHex("04"                               // network type (TORv3)
-                           "20"                               // address length
-                           "79bcc625184b05194975c28b66b66b04" // address
-                           "69f7f6556fb1ac3189a79b40dda32f1f"
-                           ));
+    s << Span{ParseHex("04"                               // network type (TORv3)
+                       "20"                               // address length
+                       "79bcc625184b05194975c28b66b66b04" // address
+                       "69f7f6556fb1ac3189a79b40dda32f1f"
+                       )};
     s >> addr;
     BOOST_CHECK(addr.IsValid());
     BOOST_CHECK(addr.IsTor());
@@ -493,20 +493,20 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
     BOOST_REQUIRE(s.empty());
 
     // Invalid TORv3, with bogus length.
-    s << MakeSpan(ParseHex("04" // network type (TORv3)
-                           "00" // address length
-                           "00" // address
-                           ));
+    s << Span{ParseHex("04" // network type (TORv3)
+                       "00" // address length
+                       "00" // address
+                       )};
     BOOST_CHECK_EXCEPTION(s >> addr, std::ios_base::failure,
                           HasReason("BIP155 TORv3 address with length 0 (should be 32)"));
     BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
     s.clear();
 
     // Valid I2P.
-    s << MakeSpan(ParseHex("05"                               // network type (I2P)
-                           "20"                               // address length
-                           "a2894dabaec08c0051a481a6dac88b64" // address
-                           "f98232ae42d4b6fd2fa81952dfe36a87"));
+    s << Span{ParseHex("05"                               // network type (I2P)
+                       "20"                               // address length
+                       "a2894dabaec08c0051a481a6dac88b64" // address
+                       "f98232ae42d4b6fd2fa81952dfe36a87")};
     s >> addr;
     BOOST_CHECK(addr.IsValid());
     BOOST_CHECK(addr.IsI2P());
@@ -516,20 +516,20 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
     BOOST_REQUIRE(s.empty());
 
     // Invalid I2P, with bogus length.
-    s << MakeSpan(ParseHex("05" // network type (I2P)
-                           "03" // address length
-                           "00" // address
-                           ));
+    s << Span{ParseHex("05" // network type (I2P)
+                       "03" // address length
+                       "00" // address
+                       )};
     BOOST_CHECK_EXCEPTION(s >> addr, std::ios_base::failure,
                           HasReason("BIP155 I2P address with length 3 (should be 32)"));
     BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
     s.clear();
 
     // Valid CJDNS.
-    s << MakeSpan(ParseHex("06"                               // network type (CJDNS)
-                           "10"                               // address length
-                           "fc000001000200030004000500060007" // address
-                           ));
+    s << Span{ParseHex("06"                               // network type (CJDNS)
+                       "10"                               // address length
+                       "fc000001000200030004000500060007" // address
+                       )};
     s >> addr;
     BOOST_CHECK(addr.IsValid());
     BOOST_CHECK(addr.IsCJDNS());
@@ -538,49 +538,49 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
     BOOST_REQUIRE(s.empty());
 
     // Invalid CJDNS, wrong prefix.
-    s << MakeSpan(ParseHex("06"                               // network type (CJDNS)
-                           "10"                               // address length
-                           "aa000001000200030004000500060007" // address
-                           ));
+    s << Span{ParseHex("06"                               // network type (CJDNS)
+                       "10"                               // address length
+                       "aa000001000200030004000500060007" // address
+                       )};
     s >> addr;
     BOOST_CHECK(addr.IsCJDNS());
     BOOST_CHECK(!addr.IsValid());
     BOOST_REQUIRE(s.empty());
 
     // Invalid CJDNS, with bogus length.
-    s << MakeSpan(ParseHex("06" // network type (CJDNS)
-                           "01" // address length
-                           "00" // address
-                           ));
+    s << Span{ParseHex("06" // network type (CJDNS)
+                       "01" // address length
+                       "00" // address
+                       )};
     BOOST_CHECK_EXCEPTION(s >> addr, std::ios_base::failure,
                           HasReason("BIP155 CJDNS address with length 1 (should be 16)"));
     BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
     s.clear();
 
     // Unknown, with extreme length.
-    s << MakeSpan(ParseHex("aa"             // network type (unknown)
-                           "fe00000002"     // address length (CompactSize's MAX_SIZE)
-                           "01020304050607" // address
-                           ));
+    s << Span{ParseHex("aa"             // network type (unknown)
+                       "fe00000002"     // address length (CompactSize's MAX_SIZE)
+                       "01020304050607" // address
+                       )};
     BOOST_CHECK_EXCEPTION(s >> addr, std::ios_base::failure,
                           HasReason("Address too long: 33554432 > 512"));
     BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
     s.clear();
 
     // Unknown, with reasonable length.
-    s << MakeSpan(ParseHex("aa"       // network type (unknown)
-                           "04"       // address length
-                           "01020304" // address
-                           ));
+    s << Span{ParseHex("aa"       // network type (unknown)
+                       "04"       // address length
+                       "01020304" // address
+                       )};
     s >> addr;
     BOOST_CHECK(!addr.IsValid());
     BOOST_REQUIRE(s.empty());
 
     // Unknown, with zero length.
-    s << MakeSpan(ParseHex("aa" // network type (unknown)
-                           "00" // address length
-                           ""   // address
-                           ));
+    s << Span{ParseHex("aa" // network type (unknown)
+                       "00" // address length
+                       ""   // address
+                       )};
     s >> addr;
     BOOST_CHECK(!addr.IsValid());
     BOOST_REQUIRE(s.empty());
diff --git a/src/test/script_tests.cpp b/src/test/script_tests.cpp
index a89eab68e9..73c3a63c08 100644
--- a/src/test/script_tests.cpp
+++ b/src/test/script_tests.cpp
@@ -284,7 +284,7 @@ public:
         CScript scriptPubKey = script;
         if (wm == WitnessMode::PKH) {
             uint160 hash;
-            CHash160().Write(MakeSpan(script).subspan(1)).Finalize(hash);
+            CHash160().Write(Span{script}.subspan(1)).Finalize(hash);
             script = CScript() << OP_DUP << OP_HASH160 << ToByteVector(hash) << OP_EQUALVERIFY << OP_CHECKSIG;
             scriptPubKey = CScript() << witnessversion << ToByteVector(hash);
         } else if (wm == WitnessMode::SH) {
@@ -1812,7 +1812,7 @@ BOOST_AUTO_TEST_CASE(bip341_keypath_test_vectors)
             BOOST_CHECK_EQUAL(HexStr(sighash), input["intermediary"]["sigHash"].get_str());
 
             // To verify the sigmsg, hash the expected sigmsg, and compare it with the (expected) sighash.
-            BOOST_CHECK_EQUAL(HexStr((CHashWriter(HASHER_TAPSIGHASH) << MakeSpan(ParseHex(input["intermediary"]["sigMsg"].get_str()))).GetSHA256()), input["intermediary"]["sigHash"].get_str());
+            BOOST_CHECK_EQUAL(HexStr((CHashWriter(HASHER_TAPSIGHASH) << Span{ParseHex(input["intermediary"]["sigMsg"].get_str())}).GetSHA256()), input["intermediary"]["sigHash"].get_str());
         }
 
     }