Allow negative literals in variable declarations

Author: gasman

lib/validate.js

@@ -496,12 +496,36 @@ Vp.local = function local(x, rhs) {
             return ty.Double;
         }, this);
 
+        when({
+            type: 'UnaryExpression',
+            operator: '-',
+            argument: {
+                type: 'Literal',
+                value: match.number,
+                raw: hasDot
+            }
+        }, function() {
+            return ty.Double;
+        });
+
         when({
             type: 'Literal',
             value: match.all(match.integer, match.range(-0x80000000, 0x100000000))
         }, function(vars) {
             return ty.Int;
         }, this);
+
+        when({
+            type: 'UnaryExpression',
+            operator: '-',
+            argument: {
+                type: 'Literal',
+                value: match.all(match.number, match.range(0, 0x80000001)),
+                raw: dotless
+            }
+        }, function() {
+            return ty.Int;
+        });
     });
 };
 

test/index.js

@@ -368,3 +368,17 @@ exports.testNegativeDoubleReturn = asmAssert.one(
         return -42.1;
     },
     { pass: true });
+
+exports.testNegativeIntVar = asmAssert.one(
+    "negative integer literal as variable declaration",
+    function f() {
+        var i = -42;
+    },
+    { pass: true });
+
+exports.testNegativeDoubleVar = asmAssert.one(
+    "negative double literal as variable declaration",
+    function f() {
+        var i = -42.1;
+    },
+    { pass: true });