Fix tests

Author: r0qs

libsolidity/analysis/ReferencesResolver.cpp

@@ -404,7 +404,15 @@ void ReferencesResolver::operator()(yul::VariableDeclaration const& _varDecl)
 			SecondarySourceLocation ssl;
 			for (auto const* decl: declarations)
 				ssl.append("The shadowed declaration is here:", decl->location());
-			if (!ssl.infos.empty())
+			if (identifier.name.str() == "blobhash" && !m_evmVersion.hasBlobhash())
+				m_errorReporter.warning(
+					7527_error,
+					nativeLocationOf(identifier),
+					"\"blobhash\" was introduced as builtin function in EVM version Cancun "
+					"but you are currently using EVM version " + m_evmVersion.name() +
+					" and it will not behave as expected for EVM version >= Cancun."
+				);
+			else if (!ssl.infos.empty())
 				m_errorReporter.declarationError(
 					3859_error,
 					nativeLocationOf(identifier),

test/libsolidity/semanticTests/builtinFunctions/blobhash.sol

@@ -9,6 +9,8 @@ contract C {
         return blobhash(2);
     }
 }
+// ====
+// EVMVersion: >=cancun
 // ----
 // f() -> 0x0100000000000000000000000000000000000000000000000000000000000001
 // g() -> 0x0100000000000000000000000000000000000000000000000000000000000002

test/libsolidity/syntaxTests/inlineAssembly/blobhash_pre_cancun_warning.sol

@@ -0,0 +1,20 @@
+contract C {
+    function f() public pure returns (uint ret) {
+        assembly {
+            let blobhash := 1
+            ret := blobhash
+        }
+    }
+    function g() public pure returns (uint ret) {
+        assembly {
+            function blobhash() -> r {
+                r := 1000
+            }
+            ret := blobhash()
+        }
+    }
+}
+// ====
+// EVMVersion: <=shanghai
+// ----
+// Warning 7527: (98-106): "blobhash" was introduced as builtin function in EVM version Cancun but you are currently using EVM version shanghai and it will not behave as expected for EVM version >= Cancun.