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Improve ecma_utf8_string_to_number function (#2006)

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This patch extends the infinity and zero parsing of the convertible number by checking the normalized number exponent part.
This improvement prevents the engine's hanging while converting extreme big numbers.

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
This commit is contained in:
rerobika
2017-10-27 12:32:29 +02:00
committed by László Langó
parent 0bc4bb056d
commit 6dae81565c
2 changed files with 71 additions and 2 deletions
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tests/jerry/regression-test-issue-1973.js
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// Copyright JS Foundation and other contributors, http://js.foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
print (777E7777777777 == Infinity)
print (-777E7777777777 == -Infinity)
print (777E-7777777777 == 0)
print (-777E-7777777777 == -0)
print (100E307 == Infinity)
print (10E307 == 1E308)
print (10E308 == Infinity)
print (1E308 == 1E308)
print (0.1E309 == 1E308)
print (0.1E310 == Infinity)
print (-100E307 == -Infinity)
print (-10E307 == -1E308)
print (-10E308 == -Infinity)
print (-1E308 == -1E308)
print (-0.1E309 == -1E308)
print (-0.1E310 == -Infinity)
print (5E-325 == 0)
print (50E-325 == 5E-324)
print (0.5E-324 == 0)
print (5E-324 == 5E-324)
print (0.05E-323 == 0)
print (0.5E-323 == 5E-324)
print (-5E-325 == -0)
print (-50E-325 == -5E-324)
print (-0.5E-324 == -0)
print (-5E-324 == -5E-324)
print (-0.05E-323 == -0)
print (-0.5E-323 == -5E-324)