Here is a mail I received from a colleague. It concerns thereby an "old" problem which seemed already solved?
FYI. I can run the unit tests, but I'm seeing a couple of hangs. The first I'm looking at is epicsTimeTest which seems to be related to c++ exception handling. I recall that there were problems with x86 exception handling, but I also recall hearing that this was fixed. ... > ***** Starting EPICS application ***** > 1..212 > ok 1 - epicsTime_gmtime() for EPICS epoch > ok 2 - nanosecond overflow throws ... hangs ... Attaching debugger shows: > Program received signal SIGINT, Interrupt. > libat_fetch_add_4 (mptr=0x757730, opval=4294967295, smodel=5) at > ../../../../gcc-7.5.0/libatomic/fop_n.c:44 > 44 ../../../../gcc-7.5.0/libatomic/fop_n.c: No such file or directory. > (gdb) bt > #0 libat_fetch_add_4 (mptr=0x757730, opval=4294967295, smodel=5) at > ../../../../gcc-7.5.0/libatomic/fop_n.c:44 > #1 0x003b07fc in __gnu_cxx::__exchange_and_add (__val=-1, __mem=0x757730) > at > /home/mdavidsaver/source/rtems/rtems-source-builder-5.1/rtems/build/i386-rtems5-gcc-7.5.0-newlib-7947581-x86_64-linux-gnu-1/build/i386-rtems5/mpentiumpro/libstdc++-v3/include/ext/atomicity.h:49 > #2 __gnu_cxx::__exchange_and_add_dispatch (__val=-1, __mem=0x757730) > at > /home/mdavidsaver/source/rtems/rtems-source-builder-5.1/rtems/build/i386-rtems5-gcc-7.5.0-newlib-7947581-x86_64-linux-gnu-1/build/i386-rtems5/mpentiumpro/libstdc++-v3/include/ext/atomicity.h:82 > #3 __gnu_cxx::__eh_atomic_dec (__count=0x757730) at > ../../../../../gcc-7.5.0/libstdc++-v3/libsupc++/eh_atomics.h:72 > #4 __gxx_exception_cleanup (code=_URC_FOREIGN_EXCEPTION_CAUGHT, exc=0x757770) > at ../../../../../gcc-7.5.0/libstdc++-v3/libsupc++/eh_throw.cc:46 > #5 0x003ad9cb in _Unwind_DeleteException (exc=0x757770) at > ../../../../gcc-7.5.0/libgcc/unwind.inc:271 > #6 0x003af8d0 in __cxxabiv1::__cxa_end_catch () at > ../../../../../gcc-7.5.0/libstdc++-v3/libsupc++/eh_catch.cc:125 > #7 0x001012fd in epicsTimeTest () at ../epicsTimeTest.cpp:116 > (gdb) Viele Grüße Heinz
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