llvm dev - Nov 2015 - Unknown constant pointer type error when using BlockAddress

Hi, all

I try to run codes below to get a block address (not entry block)

BasicBlock *bb = BasicBlock::Create(context, "label", func);
Value *alloca = builder.CreateAlloca(builder.getInt8PtrTy(), 0);
builder.CreateStore(BlockAddress::get(bb), alloca);
But every time I get an error:

Unknown constant pointer type!
UNREACHABLE executed at
/tmp/llvm20150903-18194-1kmlx72/llvm-3.6.2.src/lib/ExecutionEngine/ExecutionEngine.cpp:825!
Abort trap: 6
It is wired that this problem only happens if I use
ExecutableEngine.runFunctionAsMain to run func
If I dump my codes to a llvm IR file first and use llvm tool lli to run IR file,
it works

Is it a just-in-time problem ? I am confused.

Thanks, Allen.
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20151128/d4a4e783/attachment.html>

Are you mixing context objects? That might cause a weird issue like this.

On Sat, Nov 28, 2015 at 11:10 PM, AllenShow via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> Hi, all
>
> I try to run codes below to get a block address (not entry block)
>
> BasicBlock *bb = BasicBlock::Create(context, "label", func);
> Value *alloca = builder.CreateAlloca(builder.getInt8PtrTy(), 0);
> builder.CreateStore(BlockAddress::get(bb), alloca);
>
> But every time I get an error:
>
> Unknown constant pointer type!
> UNREACHABLE executed at
/tmp/llvm20150903-18194-1kmlx72/llvm-3.6.2.src/lib/ExecutionEngine/ExecutionEngine.cpp:825!
> Abort trap: 6
>
> It is wired that this problem only happens if I use
> ExecutableEngine.runFunctionAsMain to run func
> If I dump my codes to a llvm IR file first and use llvm tool lli to run
> IR file, it works
>
> Is it a just-in-time problem ? I am confused.
>
> Thanks, Allen.
>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20151129/13b4da69/attachment.html>