[Openmp-dev] Segmentation fault with latest version of trunk

[Jonas Hahnfeld via Openmp-dev]

Working for me right now, even though I haven't updated the compiler 
today. Can you get line information?

I'm aware of https://reviews.llvm.org/D51653 which changed 
RTLsTy::LoadRTLs(), but that has only removed an unused vector.
My other cleanups were mostly focused on the NVPTX device runtime...

Jonas

On 2018-09-05 16:57, Gheorghe-Teod Bercea via Openmp-dev wrote:
> Hi everyone,
> 
> I just updated my branches I seem to fail to execute anything
> involving OpneMP. I'm getting the a seg fault immediately.
> 
> Is OpenMP currently broken? Looks like libomptarget might be to blame.
> 
> Here is the gdb trace:
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0x0000000000000000 in ?? ()
> (gdb) up
> #1  0x00003fffb7c25814 in RTLsTy::LoadRTLs() () from
> /localhd/gbercea/patch-compiler/obj-release/lib/libomptarget.so
> (gdb)
> #2  0x00003fffb7c28624 in void
> std::__once_call_impl<std::_Bind_simple<std::_Mem_fn<void
> (RTLsTy::*)()> (RTLsTy*)> >() () from
> /localhd/gbercea/patch-compiler/obj-release/lib/libomptarget.so
> (gdb)
> #3  0x00003fffb7efb0e4 in __once_proxy () from
> /usr/lib/powerpc64le-linux-gnu/libstdc++.so.6
> (gdb)
> #4  0x00003fffb7bd058c in __GI___pthread_once
> (once_control=0x3fffb7c40338 <RTLs>, init_routine=0x3fffb7efb0b0
> <__once_proxy>) at
> ../nptl/sysdeps/unix/sysv/linux/powerpc/pthread_once.c:86
> 86        ../nptl/sysdeps/unix/sysv/linux/powerpc/pthread_once.c: No
> such file or directory.
> (gdb)
> #5  0x00003fffb7c25bb4 in RTLsTy::RegisterLib(__tgt_bin_desc*) () from
> /localhd/gbercea/patch-compiler/obj-release/lib/libomptarget.so
> (gdb)
> #6  0x00003fffb7c244ec in __tgt_register_lib () from
> /localhd/gbercea/patch-compiler/obj-release/lib/libomptarget.so
> (gdb)
> #7  0x0000000010000df8 in
> .omp_offloading.descriptor_reg.nvptx64-nvidia-cuda ()
> (gdb)
> #8  0x000000001002a6c4 in __libc_csu_init ()
> (gdb)
> #9  0x00003fffb7a24c8c in generic_start_main (main=0x100019a0 <main>,
> argc=<optimized out>, argv=0x3ffffffff138, auxvec=0x3ffffffff2f0,
> init=0x1002a630 <__libc_csu_init>, rtld_fini=<optimized out>,
> stack_end=<optimized out>,
>     fini=<optimized out>) at ../csu/libc-start.c:246
> 246        ../csu/libc-start.c: No such file or directory.
> (gdb)
> #10 0x00003fffb7a24ef8 in __libc_start_main (argc=<optimized out>,
> argv=<optimized out>, ev=<optimized out>, auxvec=<optimized out>,
> rtld_fini=<optimized out>, stinfo=<optimized out>,
> stack_on_entry=<optimized out>)
>     at ../sysdeps/unix/sysv/linux/powerpc/libc-start.c:93
> 93        ../sysdeps/unix/sysv/linux/powerpc/libc-start.c: No such
> file or directory.
> (gdb)
> #11 0x0000000000000000 in ?? ()
> 
> Thanks,
> 
> --Doru
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