hugin-devs team mailing list archive

[v4hn <1368478@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Heya,

I just spend two hours reading through boost's documentation on result_of
and Spirit and a lot of cryptic error messages. So I thought I should probably send
my results upstream so others don't have to do that again.

With boost 1.56.0 hugin produces a number of errors in src/tools/ParseExp.cpp.
The first one (with all the junk removed) is:

<<<
/usr/include/boost/utility/result_of.hpp:189:8: error: wrong number of template arguments (1, should be 3)
 struct result_of_nested_result : F::template result<FArgs>
        ^
/usr/src/hugin-2013.0.0/src/tools/ParseExp.cpp:80:12: error: provided for 'template<class X, class Y, class Z> struct Parser::lazy_if_::result'
     struct result { typedef Y type; };
            ^
>>>

Actually I'm not sure why this part ever compiled successfully, but I
suppose boost just got a bit more strict now...

The second problem seems to be a change in Spirit that makes it
neccessary to rewrite the lazy_functions a bit.

I attached a patch for all problems I encountered when building hugin (2013.0.0) with boost 1.56.0.
I also just checked and your recent release candidate does not include changes in this part of the code,
so I'm pretty sure the bug exists also with the 2014rc

** Affects: hugin
     Importance: Undecided
         Status: New

** Patch added: "fix usage of boost's result_of interface / adapt lazy functions to _var as a reference"
   https://bugs.launchpad.net/bugs/1368478/+attachment/4201852/+files/hugin-2013-boost-156.diff

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https://bugs.launchpad.net/bugs/1368478

Title:
  pto_var / ParseExp.cpp fails with boost 1.56.0

Status in Hugin - Panorama Tools GUI:
  New

Bug description:
  Heya,

  I just spend two hours reading through boost's documentation on result_of
  and Spirit and a lot of cryptic error messages. So I thought I should probably send
  my results upstream so others don't have to do that again.

  With boost 1.56.0 hugin produces a number of errors in src/tools/ParseExp.cpp.
  The first one (with all the junk removed) is:

  <<<
  /usr/include/boost/utility/result_of.hpp:189:8: error: wrong number of template arguments (1, should be 3)
   struct result_of_nested_result : F::template result<FArgs>
          ^
  /usr/src/hugin-2013.0.0/src/tools/ParseExp.cpp:80:12: error: provided for 'template<class X, class Y, class Z> struct Parser::lazy_if_::result'
       struct result { typedef Y type; };
              ^
  >>>

  Actually I'm not sure why this part ever compiled successfully, but I
  suppose boost just got a bit more strict now...

  The second problem seems to be a change in Spirit that makes it
  neccessary to rewrite the lazy_functions a bit.

  I attached a patch for all problems I encountered when building hugin (2013.0.0) with boost 1.56.0.
  I also just checked and your recent release candidate does not include changes in this part of the code,
  so I'm pretty sure the bug exists also with the 2014rc

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