[Boost-bugs] [Boost C++ Libraries] #8601: GCC 4.7.3 prints warning [-Wmaybe-uninitialized] for multi_array.hpp

Subject: [Boost-bugs] [Boost C++ Libraries] #8601: GCC 4.7.3 prints warning [-Wmaybe-uninitialized] for multi_array.hpp
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-05-21 12:39:43

#8601: GCC 4.7.3 prints warning [-Wmaybe-uninitialized] for multi_array.hpp
--------------------------------------------------+-------------------------
 Reporter:  Torquil Sørensen <torquil@…>          |        Type:  Bugs            
   Status:  new                                   |   Milestone:  To Be Determined
Component:  None                                  |     Version:  Boost 1.53.0    
 Severity:  Problem                               |    Keywords:                  
--------------------------------------------------+-------------------------
 When compiling the attached test case program using Boost 1.53.0 and GCC
 4.7.3:

 {{{
 g++ -Wall -O2 -DBOOST_DISABLE_ASSERTS -I/path/to/include/dir test_prog.cpp
 }}}

 where test_prog.cpp is


 {{{
 #include "boost/multi_array.hpp"

 int main()
 {
         boost::multi_array<int,1> A;
         A.resize(boost::extents[2]);
         A[0] = 0;
         A[1] = 0;
         return(0);
 }
 }}}

 I get the following warning:


 {{{
 In file included from test_prog.cpp:1:0:
 /mn/anatu/cma-u3/tmac/usr/include/boost/multi_array.hpp: In member
 function ‘boost::multi_array<T, NumDims, Allocator>& boost::multi_array<T,
 NumDims, Allocator>::resize(const
 boost::detail::multi_array::extent_gen<NumDims>&) [with T = int; long
 unsigned int NumDims = 1ul; Allocator = std::allocator<int>;
 boost::multi_array<T, NumDims, Allocator> = boost::multi_array<int,
 1ul>]’:
 /mn/anatu/cma-u3/tmac/usr/include/boost/multi_array.hpp:401:16: warning:
 ‘new_strides.boost::array<long int, 1ul>::elems[0ul]’ may be used
 uninitialized in this function [-Wmaybe-uninitialized]
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/8601>
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