From 3d8a80c4f3470fea0169f6774320e61619bac52b Mon Sep 17 00:00:00 2001 From: David Tardon 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(-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() && (-exp + min_exp) > -min_exp) + exp += -min_exp; + if (is_floating_point() && exp < min_exp) return false; - n /= pow10(-exp + min_exp); + n /= pow10(-exp); } else { -- 2.14.1