[llvm-dev] segfault with HowToUseJIT

[David Blaikie via llvm-dev]

+Lang, Veteran of the JIT Wars (/owner of LLVM JIT infrastructure) - might
have some ideas here.

On Mon, Feb 24, 2020 at 1:34 PM Frank Winter via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Hi!
>
> I've started looking porting our application which uses LLVM JIT to
> using LLVM 9 (9.0.1).
>
> To begin, I tried running the HowToUseJIT.cpp (example directory)
> program and it fails with a segfault:
>
>
> ./HowToUseJIT
> We just constructed this LLVM module:
>
> ; ModuleID = 'test'
> source_filename = "test"
>
> Running foo: Segmentation fault (core dumped)
>
>
>
> Running it through GDB:
>
> Program received signal SIGSEGV, Segmentation fault.
> 0x0000000000404912 in main () at HowToUseJIT.cc:131
> 131      GenericValue gv = EE->runFunction(FooF, noargs);
> (gdb) bt
> #0  0x0000000000404912 in main () at HowToUseJIT.cc:131
>
>
> It seems it fails when the JIT-compiled function gets called.
>
>
>
> I freshly downloaded LLVM 9.0.1 and build it with the backend "X86". The
> machine I am running this on is a 'Intel(R) Core(TM) i7-6820HQ CPU @
> 2.70GHz'
>
>
> Any ideas?
>
>
> Frank
>
>
>
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