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[Bug 1350343] Re: FTBFS with -DMIR_LINK_TIME_OPTIMIZATION=on -Duse_debflags=on

To: touch-packages@xxxxxxxxxxxxxxxxxxx
From: kevin gunn <kevin.gunn@xxxxxxxxxxxxx>
Date: Tue, 19 Aug 2014 21:35:55 -0000
Reply-to: Bug 1350343 <1350343@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Also affects: qtdeclarative-opensource-src (Ubuntu)
   Importance: Undecided
       Status: New

** No longer affects: qtdeclarative-opensource-src (Ubuntu)

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https://bugs.launchpad.net/bugs/1350343

Title:
  FTBFS with -DMIR_LINK_TIME_OPTIMIZATION=on -Duse_debflags=on

Status in Mir:
  New

Bug description:
  Recently (I think since -r 1800) I've seen a linker error when
  combining -DMIR_LINK_TIME_OPTIMIZATION=on -Duse_debflags=on. Vis:

  Linking CXX executable ../../bin/mir_unit_tests
  CMakeFiles/mir_unit_tests.dir/test_variable_length_array.cpp.o (symbol from plugin): warning: memset used with constant zero length parameter; this could be due to transposed parameters
  `_ZThn8_N5boost16exception_detail19error_info_injectorISt9exceptionED1Ev' referenced in section `.data.rel.ro' of /tmp/cc8eKqFB.ltrans14.ltrans.o: defined in discarded section `.gnu.linkonce.t._ZN5boost16exception_detail19error_info_injectorISt9exceptionED5Ev' of CMakeFiles/mir_unit_tests.dir/frontend/test_session_mediator_mesa.cpp.o (symbol from plugin)
  `_ZThn8_N5boost16exception_detail19error_info_injectorISt9exceptionED0Ev' referenced in section `.data.rel.ro' of /tmp/cc8eKqFB.ltrans14.ltrans.o: defined in discarded section `.gnu.linkonce.t._ZN5boost16exception_detail19error_info_injectorISt9exceptionED0Ev' of CMakeFiles/mir_unit_tests.dir/frontend/test_session_mediator_mesa.cpp.o (symbol from plugin)
  /usr/bin/ld: ../../bin/mir_unit_tests: hidden symbol `.LTHUNK1.687447' isn't defined
  /usr/bin/ld: final link failed: Bad value
  collect2: error: ld returned 1 exit status
  tests/unit-tests/CMakeFiles/mir_unit_tests.dir/build.make:3886: recipe for target 'bin/mir_unit_tests' failed
  make[2]: *** [bin/mir_unit_tests] Error 1

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