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fix fuzzer on this

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- forbid redeclaration of `this`
- suppress probability for `this` within nested functions
This commit is contained in:
alexlamsl 2017-04-24 00:59:21 +08:00
parent 9bf72cf758
commit 7a06b1427c
1 changed files with 2 additions and 2 deletions
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4
test/ufuzz.js
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@ -513,7 +513,6 @@ function createStatement(recurmax, canThrow, canBreak, canContinue, cannotReturn
// we have to do go through some trouble here to prevent leaking it // we have to do go through some trouble here to prevent leaking it
var nameLenBefore = VAR_NAMES.length; var nameLenBefore = VAR_NAMES.length;
var catchName = createVarName(MANDATORY); var catchName = createVarName(MANDATORY);
if (catchName == 'this') catchName = 'a';
var freshCatchName = VAR_NAMES.length !== nameLenBefore; var freshCatchName = VAR_NAMES.length !== nameLenBefore;
s += ' catch (' + catchName + ') { ' + createStatements(3, recurmax, canThrow, canBreak, canContinue, cannotReturn, stmtDepth) + ' }'; s += ' catch (' + catchName + ') { ' + createStatements(3, recurmax, canThrow, canBreak, canContinue, cannotReturn, stmtDepth) + ' }';
if (freshCatchName) VAR_NAMES.splice(nameLenBefore, 1); // remove catch name if (freshCatchName) VAR_NAMES.splice(nameLenBefore, 1); // remove catch name
@ -633,7 +632,7 @@ function _createExpression(recurmax, noComma, stmtDepth, canThrow) {
default: default:
if (rng(4) == 0) s.push('function ' + name + '(){'); if (rng(4) == 0) s.push('function ' + name + '(){');
else { else {
VAR_NAMES.push('this'); if (VAR_NAMES.indexOf('this') < 0) VAR_NAMES.push('this');
s.push('new function ' + name + '(){'); s.push('new function ' + name + '(){');
} }
s.push( s.push(
@ -844,6 +843,7 @@ function getVarName() {
function createVarName(maybe, dontStore) { function createVarName(maybe, dontStore) {
if (!maybe || rng(2)) { if (!maybe || rng(2)) {
var name = VAR_NAMES[rng(VAR_NAMES.length)]; var name = VAR_NAMES[rng(VAR_NAMES.length)];
if (name == 'this') name = 'a';
var suffix = rng(3); var suffix = rng(3);
if (suffix) { if (suffix) {
name += '_' + suffix; name += '_' + suffix;