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Fix a regression failure on MSVC 8 and 9; thanks to Eric Niebler for the fix

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[SVN r81711]
This commit is contained in:
Marshall Clow
2012-12-04 22:12:47 +00:00
parent a7190c0044
commit 6afae475fe
1 changed files with 9 additions and 3 deletions
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12
include/boost/algorithm/string_ref.hpp
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@ -16,6 +16,7 @@
#define BOOST_STRING_REF_HPP
#include <boost/config.hpp>
#include <boost/detail/workaround.hpp>
#include <stdexcept>
#include <algorithm>
@ -144,11 +145,16 @@ namespace boost {
// basic_string_ref string operations
BOOST_CONSTEXPR
basic_string_ref substr(size_type pos, size_type n=npos) const {
// if ( pos > size()) throw std::out_of_range ( "string_ref::substr" );
// if ( n == npos || pos + n > size()) n = size () - pos;
// return basic_string_ref ( data() + pos, n );
#if BOOST_WORKAROUND(BOOST_MSVC, <= 1600)
// Looks like msvc 8 and 9 have a codegen bug when one branch of
// a conditional operator is a throw expression. -EAN 2012/12/04
if ( pos > size()) throw std::out_of_range ( "string_ref::substr" );
if ( n == npos || pos + n > size()) n = size () - pos;
return basic_string_ref ( data() + pos, n );
#else
return pos > size() ? throw std::out_of_range ( "string_ref::substr" ) :
basic_string_ref ( data() + pos, n == npos || pos + n > size() ? size() - pos : n );
#endif
}
int compare(basic_string_ref x) const {