diff --git a/test/libsolidity/InlineAssembly.cpp b/test/libsolidity/InlineAssembly.cpp
index d6f7becf0..af7bbd831 100644
--- a/test/libsolidity/InlineAssembly.cpp
+++ b/test/libsolidity/InlineAssembly.cpp
@@ -359,12 +359,6 @@ BOOST_AUTO_TEST_CASE(shift_constantinople_warning)
 	CHECK_PARSE_WARNING("{ sar(10, 32) }", TypeError, "The \"sar\" instruction is only available for Constantinople-compatible VMs");
 }
 
-BOOST_AUTO_TEST_CASE(jump_error)
-{
-	CHECK_PARSE_WARNING("{ jump(44) }", DeclarationError, "Function not found.");
-	CHECK_PARSE_WARNING("{ jumpi(44, 2) }", DeclarationError, "Function not found.");
-}
-
 BOOST_AUTO_TEST_SUITE_END() // }}}
 
 BOOST_AUTO_TEST_SUITE_END()
diff --git a/test/libsolidity/syntaxTests/inlineAssembly/linkersymbol_function.sol b/test/libsolidity/syntaxTests/inlineAssembly/linkersymbol_function.sol
index 9d1d6c4f3..7434ddfd5 100644
--- a/test/libsolidity/syntaxTests/inlineAssembly/linkersymbol_function.sol
+++ b/test/libsolidity/syntaxTests/inlineAssembly/linkersymbol_function.sol
@@ -8,3 +8,4 @@ contract C {
   }
 }
 // ----
+// DeclarationError 5017: (63-90): The identifier "linkersymbol" is reserved and can not be used.
diff --git a/test/libsolidity/syntaxTests/inlineAssembly/reserved_identifiers.sol b/test/libsolidity/syntaxTests/inlineAssembly/reserved_identifiers.sol
new file mode 100644
index 000000000..6660887d0
--- /dev/null
+++ b/test/libsolidity/syntaxTests/inlineAssembly/reserved_identifiers.sol
@@ -0,0 +1,13 @@
+contract C {
+  function f() public pure {
+    assembly {
+      let linkersymbol := 1
+      let datacopy := 1
+      let swap16 := 1
+    }
+  }
+}
+// ----
+// DeclarationError 5017: (67-79): The identifier "linkersymbol" is reserved and can not be used.
+// DeclarationError 5017: (95-103): The identifier "datacopy" is reserved and can not be used.
+// DeclarationError 5017: (119-125): The identifier "swap16" is reserved and can not be used.
diff --git a/test/libsolidity/syntaxTests/inlineAssembly/reserved_identifiers_byzantium.sol b/test/libsolidity/syntaxTests/inlineAssembly/reserved_identifiers_byzantium.sol
new file mode 100644
index 000000000..b6cdf4540
--- /dev/null
+++ b/test/libsolidity/syntaxTests/inlineAssembly/reserved_identifiers_byzantium.sol
@@ -0,0 +1,16 @@
+contract C {
+  function f() public pure {
+    assembly {
+      let shl := 1
+    }
+    assembly {
+      pop(shl(1, 2))
+    }
+  }
+}
+// ====
+// EVMVersion: =byzantium
+// ----
+// DeclarationError 5017: (67-70): The identifier "shl" is reserved and can not be used.
+// TypeError 6612: (107-110): The "shl" instruction is only available for Constantinople-compatible VMs (you are currently compiling for "byzantium").
+// TypeError 3950: (107-116): Expected expression to evaluate to one value, but got 0 values instead.
diff --git a/test/libsolidity/syntaxTests/inlineAssembly/reserved_identifiers_constantinople.sol b/test/libsolidity/syntaxTests/inlineAssembly/reserved_identifiers_constantinople.sol
new file mode 100644
index 000000000..cea698fd1
--- /dev/null
+++ b/test/libsolidity/syntaxTests/inlineAssembly/reserved_identifiers_constantinople.sol
@@ -0,0 +1,14 @@
+contract C {
+  function f() public pure {
+    assembly {
+      let shl := 1
+    }
+    assembly {
+      pop(shl(1, 2))
+    }
+  }
+}
+// ====
+// EVMVersion: >=constantinople
+// ----
+// ParserError 5568: (67-70): Cannot use builtin function name "shl" as identifier name.
diff --git a/test/libyul/yulSyntaxTests/invalid/leave_items_on_tack.yul b/test/libyul/yulSyntaxTests/invalid/leave_items_on_stack.yul
similarity index 100%
rename from test/libyul/yulSyntaxTests/invalid/leave_items_on_tack.yul
rename to test/libyul/yulSyntaxTests/invalid/leave_items_on_stack.yul
diff --git a/test/libyul/yulSyntaxTests/linkersymbol_evmtyped.yul b/test/libyul/yulSyntaxTests/linkersymbol_evmtyped.yul
index 1cadcee0c..aa9cc3adb 100644
--- a/test/libyul/yulSyntaxTests/linkersymbol_evmtyped.yul
+++ b/test/libyul/yulSyntaxTests/linkersymbol_evmtyped.yul
@@ -1,6 +1,8 @@
 {
     let addr:u256 := linkersymbol("contract/library.sol:L")
+    function linkersymbol(x) {}
 }
 // ====
 // dialect: evmTyped
 // ----
+// ParserError 5568: (75-87): Cannot use builtin function name "linkersymbol" as identifier name.
diff --git a/test/libyul/yulSyntaxTests/objects/datacopy.yul b/test/libyul/yulSyntaxTests/objects/datacopy.yul
index bc7e211d8..6e36025fc 100644
--- a/test/libyul/yulSyntaxTests/objects/datacopy.yul
+++ b/test/libyul/yulSyntaxTests/objects/datacopy.yul
@@ -6,3 +6,4 @@
     let s := ""
     datacopy(x, "11", s)
 }
+// ----