[Bug libstdc++/51296] Several 30_threads tests FAIL on Tru64 UNIX

["ro at CeBiTec dot Uni-Bielefeld.DE" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51296

--- Comment #9 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> 2011-11-25 14:57:24 UTC ---
> --- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-11-25 14:46:07 UTC ---
> Thanks for the info - that error implies the mutex was not correctly
> initialized.
>
> What are these macros defined to (if defined)?
>
> __GTHREAD_MUTEX_INIT
> __GTHREAD_MUTEX_INIT
> __GTHREAD_MUTEX_INIT_FUNCTION

With -g3 -save-temps, I find

#define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER

and

#define PTHREAD_MUTEX_INITIALIZER {_PTHREAD_MSTATE_CONFIG, _PTHREAD_MVALID |
_PTHREAD_MVF_STA}

#define _PTHREAD_MSTATE_CONFIG 0x00200000
#define _PTHREAD_MVALID (0x05bcafe1L)
#define _PTHREAD_MVF_STA 0x08000000L

>> FAIL: 30_threads/future/cons/constexpr.cc scan-assembler-not
> _ZNSt6futureIvEC2Ev
>> FAIL: 30_threads/future/cons/constexpr.cc scan-assembler-not
> _ZNSt6futureIiEC2Ev
>> FAIL: 30_threads/shared_future/cons/constexpr.cc scan-assembler-not
> _ZNSt13shared_futureIvEC2Ev
>> FAIL: 30_threads/shared_future/cons/constexpr.cc scan-assembler-not
> _ZNSt13shared_futureIiEC2Ev
>
> These errors indicate a front-end problem (failing to do static init for the
> constexpr constructor) or a bug in the testcase.

I think it's a testcase bug: for the first case, grep reveals

 #.stabs        "future:Tt4100=s16!1,020,4071;__base_ctor
::4102=#4100,3,4103=*4100,4104=&4105=k4106=4072,3;:_ZNSt6futureIvEC2ERKSt10shared_ptrINSt13__future_base11_State_baseEE;0A.;__comp_ctor
::4102:_ZNSt6futureIvEC1ERKSt10shared_ptrINSt13__future_base11_State_baseEE;0A.;__base_ctor
::4107=#4100,3,4103,3;:_ZNSt6futureIvEC2Ev;2A.;__comp_ctor
::4107:_ZNSt6futureIvEC1Ev;2A.;__base_ctor
::4108=#4100,3,4103,4109=&4110=4100,3;:_ZNSt6futureIvEC2EOS0_;2A.;__comp_ctor
::4108:_ZNSt6futureIvEC1EOS0_;2A.;__base_ctor
::4111=#4100,3,4103,4112=&4113=k4110,3;:_ZNSt6futureIvEC2ERKS0_;2A.;__comp_ctor
::4111:_ZNSt6futureIvEC1ERKS0_;2A.;operator=::4114=#4100,4115=&4110,4103,4112,3;:_ZNSt6futureIvEaSERKS0_;2A.4116=#4100,4115,4103,4109,3;:_ZNSt6futureIvEaSEOS0_;2A.;get::4117=#4100,3,4103,3;:_ZNSt6futureIvE3getEv;2A.;share::4118=#4100,4095,4103,3;:_ZNSt6futureIvE5shareEv;2A.;;",128,0,727,0

With -g0, grep finds nothing else.

    Rainer