[Boost-bugs] [Boost C++ Libraries] #10806: boost::spirit::qi::double_ parse does not handle overflow but ASSERTs for it

Subject: [Boost-bugs] [Boost C++ Libraries] #10806: boost::spirit::qi::double_ parse does not handle overflow but ASSERTs for it
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-11-20 06:37:45

#10806: boost::spirit::qi::double_ parse does not handle overflow but ASSERTs for
it
-------------------------------------+---------------------
 Reporter:  Glen Atkins <gatkins@…>  |      Owner:  djowel
     Type:  Bugs                     |     Status:  new
Milestone:  To Be Determined         |  Component:  spirit
  Version:  Boost 1.57.0             |   Severity:  Problem
 Keywords:                           |
-------------------------------------+---------------------
 If a user puts an excessively high number (e.g. "2.3e+900") into the
 parser it does not return an error, it instead overflows returning an
 unexpected value.

 In real_impl.hpp it calls traits::scale which ends up going to
 pow10_helper<double>::call(unsigned dim).
 This ASSERTs because dim is too large. But then it calls exponents[dim]
 where dim exceeds the range of exponents.

 I believe that parse should fail (return false) if the value in the string
 exceeds the numeric limits of the floating point type.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/10806>
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