Merge remote-tracking branch 'origin/develop' into breaking

test/libsolidity/StandardCompiler.cpp

@@ -1242,7 +1242,7 @@ BOOST_AUTO_TEST_CASE(use_stack_optimization)
 	BOOST_CHECK(result["errors"][0]["severity"] == "error");
 	BOOST_REQUIRE(result["errors"][0]["message"].isString());
 	BOOST_CHECK(result["errors"][0]["message"].asString().find("Stack too deep when compiling inline assembly") != std::string::npos);
-	BOOST_CHECK(result["errors"][0]["type"] == "YulException");
+	BOOST_CHECK(result["errors"][0]["type"] == "CompilerError");
 }
 
 BOOST_AUTO_TEST_CASE(standard_output_selection_wildcard)

test/libsolidity/semanticTests/structs/global.sol

@@ -6,5 +6,7 @@ contract C {
         return (s.a, s.b);
     }
 }
+// ====
+// compileViaYul: also
 // ----
 // f((uint256,uint256)): 42, 23 -> 42, 23

test/libsolidity/semanticTests/structs/memory_struct_named_constructor.sol

@@ -0,0 +1,18 @@
+pragma experimental ABIEncoderV2;
+
+contract C {
+    struct S {
+        uint256 a;
+        bool x;
+    }
+
+    function s() public returns(S memory)
+    {
+        return S({x: true, a: 8});
+    }
+}
+
+// ====
+// compileViaYul: also
+// ----
+// s() -> 8, true

test/libsolidity/semanticTests/structs/memory_structs_as_function_args.sol

@@ -28,5 +28,7 @@ contract Test {
     }
 }
 
+// ====
+// compileViaYul: also
 // ----
 // test() -> 1, 2, 3

test/libsolidity/semanticTests/structs/memory_structs_nested.sol

@@ -38,5 +38,7 @@ contract Test {
     }
 }
 
+// ====
+// compileViaYul: also
 // ----
 // test() -> 1, 2, 3, 4

test/libsolidity/semanticTests/structs/multislot_struct_allocation.sol

@@ -0,0 +1,24 @@
+contract C {
+  struct I {
+    uint b;
+    uint c;
+    function(uint) external returns (uint) x;
+  }
+  struct S {
+    I a;
+  }
+
+  function o(uint a) external returns(uint) { return a+1; }
+
+  function f() external returns (uint) {
+    S memory s = S(I(1,2, this.o));
+    return s.a.x(1);
+  }
+}
+
+
+
+// ====
+// compileViaYul: also
+// ----
+// f() -> 2

test/libsolidity/semanticTests/structs/nested_struct_allocation.sol

@@ -0,0 +1,18 @@
+contract C {
+  struct I {
+    uint b;
+    uint c;
+  }
+  struct S {
+    I a;
+  }
+
+  function f() external returns (uint) {
+    S memory s = S(I(1,2));
+    return s.a.b;
+  }
+}
+// ====
+// compileViaYul: also
+// ----
+// f() -> 1

test/libsolidity/semanticTests/structs/simple_struct_allocation.sol

@@ -0,0 +1,14 @@
+contract C {
+  struct S {
+    uint a;
+  }
+
+  function f() external returns (uint) {
+    S memory s = S(1);
+    return s.a;
+  }
+}
+// ====
+// compileViaYul: also
+// ----
+// f() -> 1

test/libsolidity/semanticTests/structs/structs.sol

@@ -27,6 +27,8 @@ contract test {
         data.recursive[4].z = 9;
     }
 }
+// ====
+// compileViaYul: also
 // ----
 // check() -> false
 // set() ->

test/libsolidity/smtCheckerTests/external_calls/external.sol

@@ -0,0 +1,20 @@
+pragma experimental SMTChecker;
+
+abstract contract D {
+	function d() external virtual;
+}
+
+contract C {
+	uint x;
+	D d;
+	function f() public {
+		if (x < 10)
+			++x;
+	}
+	function g() public {
+		d.d();
+		assert(x < 10);
+	}
+}
+// ----
+// Warning 4661: (200-214): Assertion violation happens here

test/libsolidity/smtCheckerTests/external_calls/external_hash.sol

@@ -0,0 +1,29 @@
+pragma experimental SMTChecker;
+
+abstract contract Crypto {
+	function hash(bytes32) external pure virtual returns (bytes32);
+}
+
+contract C {
+	address owner;
+	bytes32 sig_1;
+	bytes32 sig_2;
+	Crypto d;
+
+	constructor() public {
+		owner = msg.sender;
+	}
+
+	function f1(bytes32 _msg) public {
+		address prevOwner = owner;
+		sig_1 = d.hash(_msg);
+		sig_2 = d.hash(_msg);
+		assert(prevOwner == owner);
+	}
+
+	function inv() public view {
+		assert(sig_1 == sig_2);
+	}
+}
+// ----
+// Warning 4661: (430-452): Assertion violation happens here

test/libsolidity/smtCheckerTests/external_calls/external_hash_known_code_pure.sol

@@ -0,0 +1,31 @@
+pragma experimental SMTChecker;
+
+contract Crypto {
+	function hash(bytes32) external pure returns (bytes32) {
+		return bytes32(0);
+	}
+}
+
+contract C {
+	address owner;
+	bytes32 sig_1;
+	bytes32 sig_2;
+	Crypto d;
+
+	constructor() public {
+		owner = msg.sender;
+	}
+
+	function f1(bytes32 _msg) public {
+		address prevOwner = owner;
+		sig_1 = d.hash(_msg);
+		sig_2 = d.hash(_msg);
+		assert(prevOwner == owner);
+	}
+
+	function inv() public view {
+		assert(sig_1 == sig_2);
+	}
+}
+// ----
+// Warning 4661: (438-460): Assertion violation happens here

test/libsolidity/smtCheckerTests/external_calls/external_hash_known_code_state.sol

@@ -0,0 +1,38 @@
+pragma experimental SMTChecker;
+
+contract State {
+	uint x;
+	function f() public returns (uint) {
+		if (x == 0) x = 1;
+		else if (x == 1) x = 2;
+		else if (x == 2) x = 0;
+		return x;
+	}
+}
+
+contract C {
+	address owner;
+	uint y;
+	uint z;
+	State s;
+
+	constructor() public {
+		owner = msg.sender;
+	}
+
+	function f() public {
+		address prevOwner = owner;
+		y = s.f();
+		z = s.f();
+		assert(prevOwner == owner);
+	}
+
+	function inv() public view {
+		// This is safe but external calls do not yet support the state
+		// of the called contract.
+		assert(owner == address(0) || y != z);
+	}
+}
+// ----
+// Warning 5084: (551-561): Type conversion is not yet fully supported and might yield false positives.
+// Warning 4661: (535-572): Assertion violation happens here

test/libsolidity/smtCheckerTests/external_calls/external_hash_known_code_state_reentrancy.sol

@@ -0,0 +1,32 @@
+pragma experimental SMTChecker;
+
+contract State {
+	uint x;
+	C c;
+	function f() public view returns (uint) {
+		return c.g();
+	}
+}
+
+contract C {
+	address owner;
+	uint y;
+	State s;
+
+	constructor() public {
+		owner = msg.sender;
+	}
+
+	function f() public view {
+		address prevOwner = owner;
+		uint z = s.f();
+		assert(z == y);
+		assert(prevOwner == owner);
+	}
+
+	function g() public view returns (uint) {
+		return y;
+	}
+}
+// ----
+// Warning 4661: (306-320): Assertion violation happens here

test/libsolidity/smtCheckerTests/external_calls/external_hash_known_code_state_reentrancy_indirect.sol

@@ -0,0 +1,47 @@
+pragma experimental SMTChecker;
+
+contract Other {
+	C c;
+	function h() public {
+		c.setOwner(address(0));
+	}
+}
+
+contract State {
+	uint x;
+	Other o;
+	C c;
+	function f() public returns (uint) {
+		o.h();
+		return c.g();
+	}
+}
+
+contract C {
+	address owner;
+	uint y;
+	State s;
+
+	constructor() public {
+		owner = msg.sender;
+	}
+
+	function setOwner(address _owner) public {
+		owner = _owner;
+	}
+
+	function f() public {
+		address prevOwner = owner;
+		uint z = s.f();
+		assert(z == y);
+		assert(prevOwner == owner);
+	}
+
+	function g() public view returns (uint) {
+		return y;
+	}
+}
+// ----
+// Warning 5084: (92-102): Type conversion is not yet fully supported and might yield false positives.
+// Warning 4661: (459-473): Assertion violation happens here
+// Warning 4661: (477-503): Assertion violation happens here

test/libsolidity/smtCheckerTests/external_calls/external_hash_known_code_state_reentrancy_unsafe.sol

@@ -0,0 +1,39 @@
+pragma experimental SMTChecker;
+
+contract State {
+	uint x;
+	C c;
+	function f() public returns (uint) {
+		c.setOwner(address(0));
+		return c.g();
+	}
+}
+
+contract C {
+	address owner;
+	uint y;
+	State s;
+
+	constructor() public {
+		owner = msg.sender;
+	}
+
+	function setOwner(address _owner) public {
+		owner = _owner;
+	}
+
+	function f() public {
+		address prevOwner = owner;
+		uint z = s.f();
+		assert(z == y);
+		assert(prevOwner == owner);
+	}
+
+	function g() public view returns (uint) {
+		return y;
+	}
+}
+// ----
+// Warning 5084: (116-126): Type conversion is not yet fully supported and might yield false positives.
+// Warning 4661: (388-402): Assertion violation happens here
+// Warning 4661: (406-432): Assertion violation happens here

test/libsolidity/smtCheckerTests/external_calls/external_hash_known_code_state_unsafe.sol

@@ -0,0 +1,43 @@
+pragma experimental SMTChecker;
+
+contract State {
+	uint x;
+	function f() public returns (uint) {
+		if (x == 0) x = 1;
+		else if (x == 1) x = 2;
+		else if (x == 2) x = 0;
+		return x;
+	}
+}
+
+contract C {
+	address owner;
+	uint y;
+	uint z;
+	State s;
+
+	constructor() public {
+		owner = msg.sender;
+	}
+
+	function setOwner(address _owner) public {
+		owner = _owner;
+	}
+
+	function f() public {
+		address prevOwner = owner;
+		y = s.f();
+		z = s.f();
+		assert(prevOwner == owner);
+	}
+
+	function inv() public view {
+		// This is safe but external calls do not yet support the state
+		// of the called contract.
+		assert(owner == address(0) || y != z);
+	}
+}
+// ----
+// Warning 4661: (442-468): Assertion violation happens here
+// Warning 5084: (617-627): Type conversion is not yet fully supported and might yield false positives.
+// Warning 4661: (601-638): Assertion violation happens here

test/libsolidity/smtCheckerTests/external_calls/external_inc.sol

@@ -0,0 +1,22 @@
+pragma experimental SMTChecker;
+
+abstract contract D {
+	function d() external virtual;
+}
+
+contract C {
+	uint x;
+	D d;
+
+	function inc() public {
+		++x;
+	}
+
+	function f() public {
+		d.d();
+		assert(x < 10);
+	}
+}
+// ----
+// Warning 2661: (146-149): Overflow (resulting value larger than 2**256 - 1) happens here
+// Warning 4661: (189-203): Assertion violation happens here

test/libsolidity/smtCheckerTests/external_calls/external_inc1_inc2.sol

@@ -0,0 +1,28 @@
+pragma experimental SMTChecker;
+
+abstract contract D {
+	function d() external virtual;
+}
+
+contract C {
+	uint x;
+	uint y;
+	D d;
+
+	function inc2() public {
+		if (y == 1)
+			x = 1;
+	}
+	function inc1() public {
+		if (x == 0)
+			y = 1;
+	}
+
+	function f() public {
+		uint oldX = x;
+		d.d();
+		assert(oldX == x);
+	}
+}
+// ----
+// Warning 4661: (286-303): Assertion violation happens here

test/libsolidity/smtCheckerTests/external_calls/external_safe.sol

@@ -0,0 +1,18 @@
+pragma experimental SMTChecker;
+
+abstract contract D {
+	function d() external virtual;
+}
+
+contract C {
+	uint x;
+	D d;
+	function f() public {
+		if (x < 10)
+			++x;
+	}
+	function g() public {
+		d.d();
+		assert(x < 11);
+	}
+}

test/libsolidity/smtCheckerTests/external_calls/external_single_inc.sol

@@ -0,0 +1,26 @@
+pragma experimental SMTChecker;
+
+abstract contract D {
+	function d() external virtual;
+}
+
+contract C {
+	uint x;
+	uint y;
+	D d;
+
+	function inc() public {
+		if (y == 1)
+			x = 1;
+		if (x == 0)
+			y = 1;
+	}
+
+	function f() public {
+		uint oldX = x;
+		d.d();
+		assert(oldX == x);
+	}
+}
+// ----
+// Warning 4661: (256-273): Assertion violation happens here

test/libsolidity/smtCheckerTests/external_calls/mutex.sol

@@ -0,0 +1,28 @@
+pragma experimental SMTChecker;
+
+abstract contract D {
+	function d() external virtual;
+}
+
+contract C {
+	uint x;
+	D d;
+
+	bool lock;
+	modifier mutex {
+		require(!lock);
+		lock = true;
+		_;
+		lock = false;
+	}
+
+	function set(uint _x) mutex public {
+		x = _x;
+	}
+
+	function f() mutex public {
+		uint y = x;
+		d.d();
+		assert(y == x);
+	}
+}

test/libsolidity/smtCheckerTests/external_calls/mutex_f_no_guard.sol

@@ -0,0 +1,30 @@
+pragma experimental SMTChecker;
+
+abstract contract D {
+	function d() external virtual;
+}
+
+contract C {
+	uint x;
+	D d;
+
+	bool lock;
+	modifier mutex {
+		require(!lock);
+		lock = true;
+		_;
+		lock = false;
+	}
+
+	function set(uint _x) mutex public {
+		x = _x;
+	}
+
+	function f() public {
+		uint y = x;
+		d.d();
+		assert(y == x);
+	}
+}
+// ----
+// Warning 4661: (307-321): Assertion violation happens here

test/libsolidity/smtCheckerTests/functions/functions_external_1.sol

@@ -17,4 +17,3 @@ contract C
 	}
 }
 // ----
-// Warning 4661: (257-271): Assertion violation happens here

test/libsolidity/smtCheckerTests/functions/functions_external_3.sol

@@ -18,4 +18,3 @@ contract C
 	}
 }
 // ----
-// Warning 4661: (355-379): Assertion violation happens here

test/libsolidity/smtCheckerTests/loops/for_1_false_positive.sol

@@ -14,4 +14,6 @@ contract C
 	}
 }
 // ----
+// Warning 1218: (296-309): Error trying to invoke SMT solver.
 // Warning 2661: (176-181): Overflow (resulting value larger than 2**256 - 1) happens here
+// Warning 4661: (296-309): Assertion violation happens here

test/libsolidity/smtCheckerTests/types/address_staticcall.sol

@@ -20,6 +20,3 @@ contract C
 // ----
 // Warning 2072: (224-240): Unused local variable.
 // Warning 4661: (266-281): Assertion violation happens here
-// Warning 4661: (285-299): Assertion violation happens here
-// Warning 4661: (303-322): Assertion violation happens here
-// Warning 4661: (326-350): Assertion violation happens here

test/libsolidity/syntaxTests/inlineAssembly/evm_byzantium.sol

@@ -0,0 +1,16 @@
+contract C {
+    function f() pure external {
+        assembly {
+            let s := returndatasize()
+            returndatacopy(0, 0, s)
+        }
+    }
+    function g() view external returns (uint ret) {
+        assembly {
+            ret := staticcall(0, gas(), 0, 0, 0, 0)
+        }
+    }
+}
+// ====
+// EVMVersion: >=byzantium
+// ----

test/libsolidity/syntaxTests/inlineAssembly/evm_byzantium_on_homestead.sol

@@ -0,0 +1,21 @@
+contract C {
+    function f() pure external {
+        assembly {
+            let s := returndatasize()
+            returndatacopy(0, 0, s)
+        }
+    }
+    function g() view external returns (uint ret) {
+        assembly {
+            ret := staticcall(0, gas(), 0, 0, 0, 0)
+        }
+    }
+}
+// ====
+// EVMVersion: =homestead
+// ----
+// TypeError 7756: (86-100): The "returndatasize" instruction is only available for Byzantium-compatible VMs (you are currently compiling for "homestead").
+// DeclarationError 3812: (77-102): Variable count mismatch: 1 variables and 0 values.
+// TypeError 7756: (115-129): The "returndatacopy" instruction is only available for Byzantium-compatible VMs (you are currently compiling for "homestead").
+// TypeError 1503: (245-255): The "staticcall" instruction is only available for Byzantium-compatible VMs (you are currently compiling for "homestead").
+// DeclarationError 8678: (238-277): Variable count does not match number of values (1 vs. 0)

test/libsolidity/syntaxTests/inlineAssembly/evm_constantinople.sol

@@ -0,0 +1,17 @@
+contract C {
+    function f() view external returns (uint ret) {
+        assembly {
+            ret := shl(gas(), 5)
+            ret := shr(ret, 2)
+            ret := sar(ret, 2)
+        }
+    }
+    function g() external returns (address ret) {
+        assembly {
+            ret := create2(0, 0, 0, 0)
+        }
+    }
+}
+// ====
+// EVMVersion: >=constantinople
+// ----

test/libsolidity/syntaxTests/inlineAssembly/evm_constantinople_on_byzantium.sol

@@ -0,0 +1,25 @@
+contract C {
+    function f() view external returns (uint ret) {
+        assembly {
+            ret := shl(gas(), 5)
+            ret := shr(ret, 2)
+            ret := sar(ret, 2)
+        }
+    }
+    function g() external returns (address ret) {
+        assembly {
+            ret := create2(0, 0, 0, 0)
+        }
+    }
+}
+// ====
+// EVMVersion: =byzantium
+// ----
+// TypeError 6612: (103-106): The "shl" instruction is only available for Constantinople-compatible VMs (you are currently compiling for "byzantium").
+// DeclarationError 8678: (96-116): Variable count does not match number of values (1 vs. 0)
+// TypeError 6612: (136-139): The "shr" instruction is only available for Constantinople-compatible VMs (you are currently compiling for "byzantium").
+// DeclarationError 8678: (129-147): Variable count does not match number of values (1 vs. 0)
+// TypeError 6612: (167-170): The "sar" instruction is only available for Constantinople-compatible VMs (you are currently compiling for "byzantium").
+// DeclarationError 8678: (160-178): Variable count does not match number of values (1 vs. 0)
+// TypeError 6166: (283-290): The "create2" instruction is only available for Constantinople-compatible VMs (you are currently compiling for "byzantium").
+// DeclarationError 8678: (276-302): Variable count does not match number of values (1 vs. 0)

test/libsolidity/syntaxTests/inlineAssembly/evm_istanbul_on_petersburg.sol

@@ -13,7 +13,7 @@ contract C {
 // ====
 // EVMVersion: =petersburg
 // ----
-// TypeError 7079: (101-108): The "chainid" instruction is only available for Istanbul-compatible VMs (you are currently compiling for "petersburg").
+// TypeError 1561: (101-108): The "chainid" instruction is only available for Istanbul-compatible VMs (you are currently compiling for "petersburg").
 // DeclarationError 8678: (95-110): Variable count does not match number of values (1 vs. 0)
-// TypeError 7079: (215-226): The "selfbalance" instruction is only available for Istanbul-compatible VMs (you are currently compiling for "petersburg").
+// TypeError 3672: (215-226): The "selfbalance" instruction is only available for Istanbul-compatible VMs (you are currently compiling for "petersburg").
 // DeclarationError 8678: (209-228): Variable count does not match number of values (1 vs. 0)

test/libsolidity/syntaxTests/inlineAssembly/linkersymbol_builtin.sol

@@ -0,0 +1,10 @@
+contract C {
+  function f() public pure {
+    assembly {
+      pop(linkersymbol("contract/library.sol:L"))
+    }
+  }
+}
+// ----
+// DeclarationError 4619: (67-79): Function not found.
+// TypeError 3950: (67-105): Expected expression to evaluate to one value, but got 0 values instead.

test/libsolidity/syntaxTests/inlineAssembly/linkersymbol_function.sol

@@ -0,0 +1,10 @@
+contract C {
+  function f() public pure {
+    assembly {
+      function linkersymbol(a) {}
+
+      linkersymbol("contract/library.sol:L")
+    }
+  }
+}
+// ----

test/libsolidity/syntaxTests/largeTypes/large_storage_array_mapping.sol

@@ -0,0 +1,5 @@
+contract C {
+    mapping(uint => uint[2**100]) x;
+}
+// ----
+// Warning 7325: (17-48): Type uint256[1267650600228229401496703205376] has large size and thus makes collisions likely. Either use mappings or dynamic arrays and allow their size to be increased only in small quantities per transaction.

test/libsolidity/syntaxTests/largeTypes/large_storage_arrays_combined.sol

@@ -0,0 +1,4 @@
+contract C {
+    uint[200][200][2**30][][2**30] x;
+}
+// ----

test/libsolidity/syntaxTests/largeTypes/large_storage_structs.sol

@@ -0,0 +1,65 @@
+contract C {
+    struct P { uint256[2**63] x; }
+
+    struct S0 {
+        P[2**62] x;
+        P y;
+    }
+    S0 s0;
+
+    struct S1 {
+        P x;
+        P[2**62] y;
+    }
+    S1 s1;
+
+    struct S2 {
+        mapping(uint => P[2**62]) x;
+        mapping(uint => P[2**62]) y;
+        mapping(uint => S2) z;
+    }
+    S2 s2;
+
+    struct Q0
+    {
+        uint[1][][2**65] x;
+        uint[2**65][][1] y;
+        uint[][2**65] z;
+        uint[2**65][] t;
+    }
+    Q0 q0;
+
+    struct Q1
+    {
+        uint[1][][2**65] x;
+    }
+    Q1 q1;
+
+    struct Q2
+    {
+        uint[2**65][][1] y;
+    }
+    Q2 q2;
+
+    struct Q3
+    {
+        uint[][2**65] z;
+    }
+    Q3 q3;
+
+    struct Q4
+    {
+        uint[2**65][] t;
+    }
+    Q4 q4;
+}
+// ----
+// Warning 3408: (108-113): Variable covers a large part of storage and thus makes collisions likely. Either use mappings or dynamic arrays and allow their size to be increased only in small quantities per transaction.
+// Warning 3408: (175-180): Variable covers a large part of storage and thus makes collisions likely. Either use mappings or dynamic arrays and allow their size to be increased only in small quantities per transaction.
+// Warning 7325: (314-319): Type C.P[4611686018427387904] has large size and thus makes collisions likely. Either use mappings or dynamic arrays and allow their size to be increased only in small quantities per transaction.
+// Warning 3408: (458-463): Variable covers a large part of storage and thus makes collisions likely. Either use mappings or dynamic arrays and allow their size to be increased only in small quantities per transaction.
+// Warning 7325: (458-463): Type uint256[36893488147419103232] has large size and thus makes collisions likely. Either use mappings or dynamic arrays and allow their size to be increased only in small quantities per transaction.
+// Warning 3408: (524-529): Variable covers a large part of storage and thus makes collisions likely. Either use mappings or dynamic arrays and allow their size to be increased only in small quantities per transaction.
+// Warning 7325: (590-595): Type uint256[36893488147419103232] has large size and thus makes collisions likely. Either use mappings or dynamic arrays and allow their size to be increased only in small quantities per transaction.
+// Warning 3408: (653-658): Variable covers a large part of storage and thus makes collisions likely. Either use mappings or dynamic arrays and allow their size to be increased only in small quantities per transaction.
+// Warning 7325: (716-721): Type uint256[36893488147419103232] has large size and thus makes collisions likely. Either use mappings or dynamic arrays and allow their size to be increased only in small quantities per transaction.

test/libsolidity/syntaxTests/nameAndTypeResolution/508_large_storage_arrays_combined.sol

@@ -1,5 +0,0 @@
-contract C {
-    uint[200][200][2**30][][2**30] x;
-}
-// ----
-// Warning 3408: (17-49): Variable covers a large part of storage and thus makes collisions likely. Either use mappings or dynamic arrays and allow their size to be increased only in small quantities per transaction.

test/libsolidity/syntaxTests/nameAndTypeResolution/510_large_storage_array_mapping.sol

@@ -1,5 +0,0 @@
-contract C {
-    mapping(uint => uint[2**100]) x;
-}
-// ----
-// Warning 3408: (17-48): Variable covers a large part of storage and thus makes collisions likely. Either use mappings or dynamic arrays and allow their size to be increased only in small quantities per transaction.

test/libsolidity/syntaxTests/natspec/docstring_empty_tag.sol

@@ -3,4 +3,4 @@ abstract contract C {
     function vote(uint id) public {}
 }
 // ----
-// DocstringParsingError 9222: End of tag @param not found
+// DocstringParsingError 3335: No param name given