Merge pull request #11484 from ethereum/fix-unreachable-code-anaysis

Fix revert pruner modifying function flows wrong

test/libsolidity/smtCheckerTests/functions/function_call_does_not_clear_local_vars.sol

@@ -10,3 +10,4 @@ contract C {
 // ====
 // SMTEngine: all
 // ----
+// Warning 5740: (122-136): Unreachable code.

test/libsolidity/syntaxTests/multiVariableDeclaration/multiSingleVariableDeclaration.sol

@@ -5,3 +5,4 @@ contract C {
   }
 }
 // ----
+// Warning 5740: (78-79): Unreachable code.

test/libsolidity/syntaxTests/multiVariableDeclaration/multiVariableDeclarationSimple.sol

@@ -10,4 +10,5 @@ contract C {
   function h() internal pure returns (bytes memory, string storage s) { s = s; }
 }
 // ----
+// Warning 5740: (111-115): Unreachable code.
 // Warning 6321: (250-262): Unnamed return variable can remain unassigned. Add an explicit return with value to all non-reverting code paths or name the variable.

test/libsolidity/syntaxTests/nameAndTypeResolution/001_name_references.sol

@@ -3,4 +3,5 @@ contract test {
     function f(uint256) public returns (uint out) { f(variable); test; out; }
 }
 // ----
+// Warning 5740: (103-112): Unreachable code.
 // Warning 6133: (103-107): Statement has no effect.

test/libsolidity/syntaxTests/viewPureChecker/call_internal_functions_success.sol

@@ -5,3 +5,9 @@ contract C {
     function i() payable public { i(); h(); g(); f(); }
 }
 // ----
+// Warning 5740: (102-105): Unreachable code.
+// Warning 5740: (140-143): Unreachable code.
+// Warning 5740: (145-148): Unreachable code.
+// Warning 5740: (191-194): Unreachable code.
+// Warning 5740: (196-199): Unreachable code.
+// Warning 5740: (201-204): Unreachable code.

test/libsolidity/syntaxTests/viewPureChecker/view_pure_abi_encode.sol

@@ -7,3 +7,4 @@ contract C {
     }
 }
 // ----
+// Warning 5740: (142-237): Unreachable code.