[Boost-bugs] [Boost C++ Libraries] #12181: Compile cpp_int fails in gcc6.1

Subject: [Boost-bugs] [Boost C++ Libraries] #12181: Compile cpp_int fails in gcc6.1
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2016-05-07 11:38:49

#12181: Compile cpp_int fails in gcc6.1
----------------------------------------+----------------------------
 Reporter:  Mario Lezcano <mariolez@…>  |      Owner:  johnmaddock
     Type:  Bugs                        |     Status:  new
Milestone:  To Be Determined            |  Component:  multiprecision
  Version:  Boost 1.60.0                |   Severity:  Problem
 Keywords:                              |
----------------------------------------+----------------------------
 [[Image()]]Using boost 1.60.0-4 and gcc 6.1.1.20160501, the following code
 {{{#!c++
 // gcc6.cpp
 #include <boost/multiprecision/cpp_int.hpp>

 int main(){
 }
 }}}
 fails to compile with error
 {{{#!c++
 In file included from /usr/include/boost/config.hpp:61:0,
                  from /usr/include/boost/cstdint.hpp:36,
                  from /usr/include/boost/multiprecision/cpp_int.hpp:11,
                  from gcc6.cpp:1:
 /usr/include/boost/multiprecision/cpp_int.hpp:193:4: error: right operand
 of shift expression ‘(1u << 63u)’ is >= than the precision of the left
 operand [-fpermissive]
     BOOST_STATIC_CONSTANT(limb_type, sign_bit_mask = 1u << (limb_bits -
 1));
     ^
 /usr/include/boost/multiprecision/cpp_int.hpp:416:4: error: right operand
 of shift expression ‘(1u << 63u)’ is >= than the precision of the left
 operand [-fpermissive]
     BOOST_STATIC_CONSTANT(limb_type, sign_bit_mask = 1u << (limb_bits -
 1));
     ^
 /usr/include/boost/multiprecision/cpp_int.hpp:568:4: error: right operand
 of shift expression ‘(1u << 63u)’ is >= than the precision of the left
 operand [-fpermissive]
     BOOST_STATIC_CONSTANT(limb_type, sign_bit_mask = 1u << (limb_bits -
 1));
 }}}
 when compiled with
 {{{
 g++ gcc6.cpp
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/12181>
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