Updated dist files.

dist/ethers-contracts.js

@@ -4,6 +4,7 @@
 var Interface = require('./interface.js');
 
 var utils = (function() {
+    var convert = require('../utils/convert.js');
     return {
         defineProperty: require('../utils/properties.js').defineProperty,
 
@@ -11,7 +12,8 @@ var utils = (function() {
 
         bigNumberify: require('../utils/bignumber.js').bigNumberify,
 
-        hexlify: require('../utils/convert.js').hexlify,
+        arrayify: convert.arrayify,
+        hexlify: convert.hexlify,
     };
 })();
 
@@ -125,9 +127,12 @@ function Contract(addressOrName, contractInterface, signerOrProvider) {
 
                     }).then(function(value) {
                         try {
+                            if ((utils.arrayify(value).length % 32) !== 0) {
+                                throw new Error('call exception');
+                            }
                             var result = call.parse(value);
                         } catch (error) {
-                            if (value === '0x' && method.outputs.types.length > 0) {
+                            if ((value === '0x' && method.outputs.types.length > 0) || error.message === 'call exception') {
                                 errors.throwError('call exception', errors.CALL_EXCEPTION, {
                                     address: addressOrName,
                                     method: call.signature,
@@ -5191,10 +5196,11 @@ var coderNumber = function(coerceFunc, size, signed, localName) {
                 });
             }
             value = value.toTwos(size * 8).maskn(size * 8);
-            //value = value.toTwos(size * 8).maskn(size * 8);
+
             if (signed) {
                 value = value.fromTwos(size * 8).toTwos(256);
             }
+
             return utils.padZeros(utils.arrayify(value), 32);
         },
         decode: function(data, offset) {
@@ -5262,6 +5268,14 @@ var coderFixedBytes = function(coerceFunc, length, localName) {
         encode: function(value) {
             try {
                 value = utils.arrayify(value);
+
+                // @TODO: In next major change, the value.length MUST equal the
+                // length, but that is a backward-incompatible change, so here
+                // we just check for things that can cause problems.
+                if (value.length > 32) {
+                    throw new Error('too many bytes for field');
+                }
+
             } catch (error) {
                 errors.throwError('invalid ' + name + ' value', errors.INVALID_ARGUMENT, {
                     arg: localName,
@@ -5269,7 +5283,8 @@ var coderFixedBytes = function(coerceFunc, length, localName) {
                     value: error.value
                 });
             }
-            if (length === 32) { return value; }
+
+            if (value.length === 32) { return value; }
 
             var result = new Uint8Array(32);
             result.set(value);

dist/ethers-utils.js

@@ -5398,10 +5398,11 @@ var coderNumber = function(coerceFunc, size, signed, localName) {
                 });
             }
             value = value.toTwos(size * 8).maskn(size * 8);
-            //value = value.toTwos(size * 8).maskn(size * 8);
+
             if (signed) {
                 value = value.fromTwos(size * 8).toTwos(256);
             }
+
             return utils.padZeros(utils.arrayify(value), 32);
         },
         decode: function(data, offset) {
@@ -5469,6 +5470,14 @@ var coderFixedBytes = function(coerceFunc, length, localName) {
         encode: function(value) {
             try {
                 value = utils.arrayify(value);
+
+                // @TODO: In next major change, the value.length MUST equal the
+                // length, but that is a backward-incompatible change, so here
+                // we just check for things that can cause problems.
+                if (value.length > 32) {
+                    throw new Error('too many bytes for field');
+                }
+
             } catch (error) {
                 errors.throwError('invalid ' + name + ' value', errors.INVALID_ARGUMENT, {
                     arg: localName,
@@ -5476,7 +5485,8 @@ var coderFixedBytes = function(coerceFunc, length, localName) {
                     value: error.value
                 });
             }
-            if (length === 32) { return value; }
+
+            if (value.length === 32) { return value; }
 
             var result = new Uint8Array(32);
             result.set(value);

dist/ethers-wallet.js

@@ -9483,10 +9483,11 @@ var coderNumber = function(coerceFunc, size, signed, localName) {
                 });
             }
             value = value.toTwos(size * 8).maskn(size * 8);
-            //value = value.toTwos(size * 8).maskn(size * 8);
+
             if (signed) {
                 value = value.fromTwos(size * 8).toTwos(256);
             }
+
             return utils.padZeros(utils.arrayify(value), 32);
         },
         decode: function(data, offset) {
@@ -9554,6 +9555,14 @@ var coderFixedBytes = function(coerceFunc, length, localName) {
         encode: function(value) {
             try {
                 value = utils.arrayify(value);
+
+                // @TODO: In next major change, the value.length MUST equal the
+                // length, but that is a backward-incompatible change, so here
+                // we just check for things that can cause problems.
+                if (value.length > 32) {
+                    throw new Error('too many bytes for field');
+                }
+
             } catch (error) {
                 errors.throwError('invalid ' + name + ' value', errors.INVALID_ARGUMENT, {
                     arg: localName,
@@ -9561,7 +9570,8 @@ var coderFixedBytes = function(coerceFunc, length, localName) {
                     value: error.value
                 });
             }
-            if (length === 32) { return value; }
+
+            if (value.length === 32) { return value; }
 
             var result = new Uint8Array(32);
             result.set(value);

dist/ethers.js

@@ -4,6 +4,7 @@
 var Interface = require('./interface.js');
 
 var utils = (function() {
+    var convert = require('../utils/convert.js');
     return {
         defineProperty: require('../utils/properties.js').defineProperty,
 
@@ -11,7 +12,8 @@ var utils = (function() {
 
         bigNumberify: require('../utils/bignumber.js').bigNumberify,
 
-        hexlify: require('../utils/convert.js').hexlify,
+        arrayify: convert.arrayify,
+        hexlify: convert.hexlify,
     };
 })();
 
@@ -125,9 +127,12 @@ function Contract(addressOrName, contractInterface, signerOrProvider) {
 
                     }).then(function(value) {
                         try {
+                            if ((utils.arrayify(value).length % 32) !== 0) {
+                                throw new Error('call exception');
+                            }
                             var result = call.parse(value);
                         } catch (error) {
-                            if (value === '0x' && method.outputs.types.length > 0) {
+                            if ((value === '0x' && method.outputs.types.length > 0) || error.message === 'call exception') {
                                 errors.throwError('call exception', errors.CALL_EXCEPTION, {
                                     address: addressOrName,
                                     method: call.signature,
@@ -9922,7 +9927,7 @@ uuid.unparse = unparse;
 module.exports = uuid;
 
 },{"./rng":44}],46:[function(require,module,exports){
-module.exports={"version":"3.0.25"}
+module.exports={"version":"3.0.27"}
 },{}],47:[function(require,module,exports){
 'use strict';
 
@@ -12365,10 +12370,11 @@ var coderNumber = function(coerceFunc, size, signed, localName) {
                 });
             }
             value = value.toTwos(size * 8).maskn(size * 8);
-            //value = value.toTwos(size * 8).maskn(size * 8);
+
             if (signed) {
                 value = value.fromTwos(size * 8).toTwos(256);
             }
+
             return utils.padZeros(utils.arrayify(value), 32);
         },
         decode: function(data, offset) {
@@ -12436,6 +12442,14 @@ var coderFixedBytes = function(coerceFunc, length, localName) {
         encode: function(value) {
             try {
                 value = utils.arrayify(value);
+
+                // @TODO: In next major change, the value.length MUST equal the
+                // length, but that is a backward-incompatible change, so here
+                // we just check for things that can cause problems.
+                if (value.length > 32) {
+                    throw new Error('too many bytes for field');
+                }
+
             } catch (error) {
                 errors.throwError('invalid ' + name + ' value', errors.INVALID_ARGUMENT, {
                     arg: localName,
@@ -12443,7 +12457,8 @@ var coderFixedBytes = function(coerceFunc, length, localName) {
                     value: error.value
                 });
             }
-            if (length === 32) { return value; }
+
+            if (value.length === 32) { return value; }
 
             var result = new Uint8Array(32);
             result.set(value);

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ethers",
-  "version": "3.0.26",
+  "version": "3.0.27",
   "description": "Ethereum wallet library.",
   "main": "index.js",
   "scripts": {