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dns: Use object without protoype for map #5843

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dns: Use object without protoype for map #5843

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6f584af
dns: Use object without protoype for map
benjamingr Mar 22, 2016
606fe5f
add test
benjamingr Mar 22, 2016
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2 changes: 1 addition & 1 deletion lib/dns.js
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Original file line number Diff line number Diff line change
Expand Up @@ -243,7 +243,7 @@ function resolver(bindingName) {
}


var resolveMap = {};
var resolveMap = Object.create(null);
exports.resolve4 = resolveMap.A = resolver('queryA');
exports.resolve6 = resolveMap.AAAA = resolver('queryAaaa');
exports.resolveCname = resolveMap.CNAME = resolver('queryCname');
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5 changes: 5 additions & 0 deletions test/parallel/test-c-ares.js
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Expand Up @@ -27,6 +27,11 @@ assert.throws(function() {
dns.resolve('www.google.com', 'HI');
}, /Unknown type/);

// Try calling resolve with an unsupported type that's an object key
assert.throws(function() {
dns.resolve('www.google.com', 'toString');
}, /Unknown type/);

// Windows doesn't usually have an entry for localhost 127.0.0.1 in
// C:\Windows\System32\drivers\etc\hosts
// so we disable this test on Windows.
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