[Boost-bugs] [Boost C++ Libraries] #4815: dependency on obsolete versions of mmap and shmdt

Subject: [Boost-bugs] [Boost C++ Libraries] #4815: dependency on obsolete versions of mmap and shmdt
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-11-04 22:31:01

#4815: dependency on obsolete versions of mmap and shmdt
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 Reporter:  stephen.clamage@…           |       Owner:  igaztanaga  
     Type:  Bugs                        |      Status:  new         
Milestone:  To Be Determined            |   Component:  interprocess
  Version:  Boost 1.44.0                |    Severity:  Problem     
 Keywords:                              |  
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 Compiler error messages when compiling on Solaris: [[br]]
 "../../../boost/interprocess/mapped_region.hpp", line 549: Error: Formal
 argument 1 of type char* in call to shmdt(char*) is being passed void*.
 [[br]]
 "../../../boost/interprocess/anonymous_shared_memory.hpp", line 87: Error:
 Formal argument 1 of type char* in call to mmap(char*, unsigned, int, int,
 int, long) is being passed void*.

 The problem is that the calls to shmdt and mmap depend on passing a void*.
 In the obsolete XPG4 version of Unix (roughly POSIX.2a-1992), these
 functions indeed took a void* argument. In all later versions of standard
 Unix, these functions take a char* argument. Portable code therefore
 cannot depend on passing a void*, but can depend on passing a char* to
 these functions.

 The offending code should be changed either to pass a char* argument, or
 the argument should be cast to char* at the point of the call.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/4815>
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