[Boost-bugs] [Boost C++ Libraries] #6055: unqualified sqrt() fails to compile on SunCC/SunOS

Subject: [Boost-bugs] [Boost C++ Libraries] #6055: unqualified sqrt() fails to compile on SunCC/SunOS
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-10-25 10:34:51

#6055: unqualified sqrt() fails to compile on SunCC/SunOS
------------------------------------------------------+---------------------
 Reporter:  Fedor Sergeev <Fedor.Sergeev@…>           |       Owner:  guwi17 
     Type:  Bugs                                      |      Status:  new    
Milestone:  To Be Determined                          |   Component:  uBLAS  
  Version:  Boost 1.47.0                              |    Severity:  Problem
 Keywords:  SunCC                                     |  
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 Compiling uBlas' test_complex_norms on SunOS with SunCC:
 {{{
 ]  sunCC -library=stlport4 -I../
 ../libs/numeric/ublas/test/test_complex_norms.cpp
 "../libs/numeric/ublas/test/test_complex_norms.cpp", line 37: Error: The
 function "sqrt" must have a prototype.
 "../libs/numeric/ublas/test/test_complex_norms.cpp", line 37: Error: The
 function "sqrt" must have a prototype.
 "../libs/numeric/ublas/test/test_complex_norms.cpp", line 65: Error: The
 function "sqrt" must have a prototype.
 "../libs/numeric/ublas/test/test_complex_norms.cpp", line 65: Error: The
 function "sqrt" must have a prototype.
 4 Error(s) detected.
 }}}

 The standard math header included here - <cmath> - does not inject math
 functions into the global namespace. The only standard way to use these
 functions (sqrt included) is via std:: namespace.

 All the uses of sqrt should be converted to std::sqrt, otherwise compilers
 with strictly conforming STLs (like SunCC -stlport4) will not be able to
 compile.

 std::sqrt works fine with all the compilers I tried (SunCC, g++).

 (suggested patch attached)

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/6055>
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