Restrict experimental solidity to constantinople and above

test/libsolidity/ASTJSON/pragma_experimental_solidity.json

@@ -17,5 +17,5 @@
       "src": "0:29:1"
     }
   ],
-  "src": "0:30:1"
+  "src": "0:70:1"
 }

test/libsolidity/ASTJSON/pragma_experimental_solidity.sol

@@ -1,3 +1,4 @@
 pragma experimental solidity;
-
+// ====
+// EVMVersion: >=constantinople
 // ----

test/libsolidity/ASTJSON/pragma_experimental_solidity_parseOnly.json

@@ -16,5 +16,5 @@
       "src": "0:29:1"
     }
   ],
-  "src": "0:30:1"
+  "src": "0:70:1"
 }

test/libsolidity/syntaxTests/pragma/experimental_solidity.sol

@@ -1,3 +1,5 @@
 pragma experimental solidity;
+// ====
+// EVMVersion: >=constantinople
 // ----
 // Warning 2264: (0-29): Experimental features are turned on. Do not use experimental features on live deployments.

test/libsolidity/syntaxTests/pragma/experimental_solidity_multisource_not_all_enable.sol

@@ -18,6 +18,8 @@ import "A.sol";
 contract D {
     A a;
 }
+// ====
+// EVMVersion: >=constantinople
 // ----
 // ParserError 2141: (B.sol:0-29): File declares "pragma experimental solidity". If you want to enable the experimental mode, all source units must include the pragma.
 // ParserError 2141: (C.sol:0-29): File declares "pragma experimental solidity". If you want to enable the experimental mode, all source units must include the pragma.

test/libsolidity/syntaxTests/pragma/experimental_solidity_out_of_order_1.sol

@@ -1,5 +1,7 @@
 contract A {}
 
 pragma experimental solidity;
+// ====
+// EVMVersion: >=constantinople
 // ----
 // ParserError 8185: (45-45): Experimental pragma "solidity" can only be set at the beginning of the source unit.

test/libsolidity/syntaxTests/pragma/experimental_solidity_out_of_order_2.sol

@@ -9,5 +9,7 @@ struct A
 {
     uint256 x;
 }
+// ====
+// EVMVersion: >=constantinople
 // ----
 // ParserError 8185: (83-89): Experimental pragma "solidity" can only be set at the beginning of the source unit.

test/libsolidity/syntaxTests/pragma/experimental_solidity_wrong_evm_version.sol

@@ -0,0 +1,8 @@
+pragma experimental solidity;
+
+contract C {}
+
+// ====
+// EVMVersion: <constantinople
+// ----
+// ParserError 7637: (31-39): Experimental solidity requires Constantinople EVM version at the minimum.