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Added check for BOOST_NO_STD_DISTANCE

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[SVN r16144]
This commit is contained in:
John Maddock
2002-11-07 12:59:57 +00:00
parent cf285ed3e5
commit b6a13dd215
1 changed files with 4 additions and 0 deletions
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4
include/boost/regex/v3/regex_match.hpp
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@ -213,7 +213,11 @@ public:
} }
void estimate_max_state_count(iterator a, iterator b, std::size_t states, std::random_access_iterator_tag*) void estimate_max_state_count(iterator a, iterator b, std::size_t states, std::random_access_iterator_tag*)
{ {
#ifndef BOOST_NO_STD_DISTANCE
difference_type dist = std::distance(a,b); difference_type dist = std::distance(a,b);
#else
difference_type dist = b - a;
#endif
states *= states; states *= states;
difference_type lim = std::numeric_limits<difference_type>::max() - 1000 - states; difference_type lim = std::numeric_limits<difference_type>::max() - 1000 - states;
if(dist > (difference_type)(lim / states)) if(dist > (difference_type)(lim / states))