[Boost-bugs] [Boost C++ Libraries] #6680: Compilation error at regex file basic_regex_parser.hpp

Subject: [Boost-bugs] [Boost C++ Libraries] #6680: Compilation error at regex file basic_regex_parser.hpp
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-03-12 16:39:53

#6680: Compilation error at regex file basic_regex_parser.hpp
----------------------------------+-----------------------------------------
 Reporter:  miko.nahum@…          |       Owner:  johnmaddock
     Type:  Bugs                  |      Status:  new        
Milestone:  To Be Determined      |   Component:  regex      
  Version:  Boost 1.49.0          |    Severity:  Problem    
 Keywords:                        |  
----------------------------------+-----------------------------------------
 Hi,

 Compile boost 1.49.0 on Sun SPARC 5.10 using Sun Studio 12 yield
 compilation error on file "basic_regex_parser.hpp".

 Line 208 of that file contains the following:
          message += std::string(m_base + start_pos, m_base + position);
          message += ">>>HERE>>>";
          message += std::string(m_base + position, m_base + end_pos);

 where m_base, poition, start_pos and end_pos defined as:
 const charT*               m_base;
 std::ptrdiff_t position, std::string message, std::ptrdiff_t start_pos

 The problem occurs when compile the regex source file "wide_posix_api.cpp"
 which indirectly include the file "basic_regex_parser.hpp".

 It look like the above code attempts to constructs a nice std::string
 error message providing it a small piece of the regex, which in this case
 is of wide string type (i.e., construct stdd:string using wchar_t*).

 The existent nearest constructor:
 basic_string (const _charT*, const _charT*, const _Allocator&
 _RWSTD_DEFAULT_ARG(_Allocator()));

 where "_charT" is either "char" or "wchar_t", right?!

 You can have:
 1) basic_string<char>(char* b, char* e)
 2) basic_string<wchar_t>(wchar_t* b, wchar_t* e)

 But definitively not:
 basic_string<char>(wchar_t* b, wchar_t* e)
 This is a MISHMASH.

 (what error message will be look like if it start as a std::string, than
 you concat it piece of wide string, and and end is with a std::string? it
 will be garbaged).

 Here is the compilation error:

 miko_at_compile1-U10-zone[/<5>libs/regex/src] >
 miko_at_compile1-U10-zone[/<5>libs/regex/src] > pwd
 /VOBS/n2_3rd_party_components/boost/dev/boost_1_49_0/libs/regex/src
 miko_at_compile1-U10-zone[/<5>libs/regex/src] >
 miko_at_compile1-U10-zone[/<5>libs/regex/src] >
 miko_at_compile1-U10-zone[/<5>libs/regex/src] > CC -V
 CC: Sun C++ 5.12 SunOS_sparc 2011/11/16
 miko_at_compile1-U10-zone[/<5>libs/regex/src] >
 miko_at_compile1-U10-zone[/<5>libs/regex/src] >
 miko_at_compile1-U10-zone[/<5>libs/regex/src] > CC -c -g -I../../..
 wide_posix_api.cpp
 "../../../boost/regex/v4/basic_regex_parser.hpp", line 208: Error: Could
 not find a match for std::string::basic_string(const wchar_t*, const
 wchar_t*) needed in boost::re_detail::basic_regex_parser<wchar_t,
 boost::c_regex_traits<wchar_t>>::fail(boost::regex_constants::error_type,
 int, std::string, int).
 "../../../boost/regex/v4/basic_regex_parser.hpp", line 51:     Where:
 While instantiating "boost::re_detail::basic_regex_parser<wchar_t,
 boost::c_regex_traits<wchar_t>>::fail(boost::regex_constants::error_type,
 int, std::string, int)".
 "../../../boost/regex/v4/basic_regex_parser.hpp", line 51:     Where:
 Instantiated from boost::re_detail::basic_regex_parser<wchar_t,
 boost::c_regex_traits<wchar_t>>::parse(const wchar_t*, const wchar_t*,
 unsigned).
 "../../../boost/regex/v4/basic_regex.hpp", line 212:     Where:
 Instantiated from boost::basic_regex<wchar_t,
 boost::c_regex_traits<wchar_t>>::do_assign(const wchar_t*, const wchar_t*,
 unsigned).
 "../../../boost/regex/v4/basic_regex.hpp", line 379:     Where:
 Instantiated from non-template code.
 "../../../boost/regex/v4/basic_regex_parser.hpp", line 210: Error: Could
 not find a match for std::string::basic_string(const wchar_t*, const
 wchar_t*) needed in boost::re_detail::basic_regex_parser<wchar_t,
 boost::c_regex_traits<wchar_t>>::fail(boost::regex_constants::error_type,
 int, std::string, int).
 "../../../boost/regex/v4/basic_regex_parser.hpp", line 51:     Where:
 While instantiating "boost::re_detail::basic_regex_parser<wchar_t,
 boost::c_regex_traits<wchar_t>>::fail(boost::regex_constants::error_type,
 int, std::string, int)".
 "../../../boost/regex/v4/basic_regex_parser.hpp", line 51:     Where:
 Instantiated from boost::re_detail::basic_regex_parser<wchar_t,
 boost::c_regex_traits<wchar_t>>::parse(const wchar_t*, const wchar_t*,
 unsigned).
 "../../../boost/regex/v4/basic_regex.hpp", line 212:     Where:
 Instantiated from boost::basic_regex<wchar_t,
 boost::c_regex_traits<wchar_t>>::do_assign(const wchar_t*, const wchar_t*,
 unsigned).
 "../../../boost/regex/v4/basic_regex.hpp", line 379:     Where:
 Instantiated from non-template code.
 2 Error(s) detected.
 Exit 2
 miko_at_compile1-U10-zone[/<5>libs/regex/src] >
 miko_at_compile1-U10-zone[/<5>libs/regex/src] >

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/6680>
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