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LibJS+LibC: Add tests for Date tuple ctor overflow and make mktime()/timegm() handle month overflow

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This commit is contained in:
Nico Weber
2020-08-23 21:37:03 -04:00
committed by Andreas Kling
parent 465d46c665
commit 84f729c2b4
Notes: sideshowbarker 2024-07-19 03:13:40 +09:00 
Author: https://github.com/nico
Commit: https://github.com/SerenityOS/serenity/commit/84f729c2b4d
Pull-request: https://github.com/SerenityOS/serenity/pull/3277
3 changed files with 27 additions and 3 deletions
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Libraries/LibJS/Runtime/DateConstructor.cpp
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@@ -179,7 +179,6 @@ Value DateConstructor::construct(Interpreter& interpreter, Function&)
value = parse_simplified_iso8601(value.as_string().string());
// A timestamp since the epoch, in UTC.
// FIXME: Date() probably should use a double as internal representation, so that NaN arguments and larger offsets are handled correctly.
// FIXME: DateTime::from_timestamp() seems to not support negative offsets.
double value_as_double = value.to_double(interpreter);
auto datetime = Core::DateTime::from_timestamp(static_cast<time_t>(value_as_double / 1000));
auto milliseconds = static_cast<u16>(fmod(value_as_double, 1000));
@@ -187,7 +186,6 @@ Value DateConstructor::construct(Interpreter& interpreter, Function&)
}
// A date/time in components, in local time.
// FIXME: This doesn't construct an "Invalid Date" object if one of the parameters is NaN.
// FIXME: This doesn't range-check args and convert months > 12 to year increments etc.
auto arg_or = [&interpreter](size_t i, i32 fallback) { return interpreter.argument_count() > i ? interpreter.argument(i).to_i32(interpreter) : fallback; };
int year = interpreter.argument(0).to_i32(interpreter);
int month_index = interpreter.argument(1).to_i32(interpreter);