| From 3d8a80c4f3470fea0169f6774320e61619bac52b Mon Sep 17 00:00:00 2001 |
| From: David Tardon <dtardon@redhat.com> |
| Date: Mon, 2 Oct 2017 16:22:36 +0200 |
| Subject: [PATCH] ofz#2894 avoid signed integer overflow |
| |
| /usr/include/boost/spirit/home/qi/numeric/detail/real_impl.hpp:86:48: runtime error: negation of -2147483648 cannot be represented in type 'int'; cast to an unsigned type to negate this value to itself |
| --- |
| include/boost/spirit/home/qi/numeric/detail/real_impl.hpp | 7 ++++--- |
| 1 file changed, 4 insertions(+), 3 deletions(-) |
| |
| diff --git a/include/boost/spirit/home/qi/numeric/detail/real_impl.hpp b/include/boost/spirit/home/qi/numeric/detail/real_impl.hpp |
| index 9aa5bb8bb..3e7ab18a9 100644 |
| --- a/include/boost/spirit/home/qi/numeric/detail/real_impl.hpp |
| +++ b/include/boost/spirit/home/qi/numeric/detail/real_impl.hpp |
| @@ -81,12 +81,13 @@ namespace boost { namespace spirit { namespace traits |
| detail::compensate_roundoff(n, acc_n); |
| n /= pow10<T>(-min_exp); |
| |
| - // return false if (-exp + min_exp) exceeds the -min_exp |
| + // return false if exp still exceeds the min_exp |
| // do this check only for primitive types! |
| - if (is_floating_point<T>() && (-exp + min_exp) > -min_exp) |
| + exp += -min_exp; |
| + if (is_floating_point<T>() && exp < min_exp) |
| return false; |
| |
| - n /= pow10<T>(-exp + min_exp); |
| + n /= pow10<T>(-exp); |
| } |
| else |
| { |
| -- |
| 2.14.1 |
| |
