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35 lines
1.5 KiB
35 lines
1.5 KiB
4 months ago
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From 3d8a80c4f3470fea0169f6774320e61619bac52b Mon Sep 17 00:00:00 2001
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From: David Tardon <dtardon@redhat.com>
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Date: Mon, 2 Oct 2017 16:22:36 +0200
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Subject: [PATCH] ofz#2894 avoid signed integer overflow
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/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
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---
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include/boost/spirit/home/qi/numeric/detail/real_impl.hpp | 7 ++++---
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1 file changed, 4 insertions(+), 3 deletions(-)
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diff --git a/include/boost/spirit/home/qi/numeric/detail/real_impl.hpp b/include/boost/spirit/home/qi/numeric/detail/real_impl.hpp
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index 9aa5bb8bb..3e7ab18a9 100644
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--- a/include/boost/spirit/home/qi/numeric/detail/real_impl.hpp
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+++ b/include/boost/spirit/home/qi/numeric/detail/real_impl.hpp
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@@ -81,12 +81,13 @@ namespace boost { namespace spirit { namespace traits
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detail::compensate_roundoff(n, acc_n);
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n /= pow10<T>(-min_exp);
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- // return false if (-exp + min_exp) exceeds the -min_exp
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+ // return false if exp still exceeds the min_exp
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// do this check only for primitive types!
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- if (is_floating_point<T>() && (-exp + min_exp) > -min_exp)
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+ exp += -min_exp;
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+ if (is_floating_point<T>() && exp < min_exp)
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return false;
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- n /= pow10<T>(-exp + min_exp);
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+ n /= pow10<T>(-exp);
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}
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else
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{
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--
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2.14.1
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