llvm dev - Jan 2017 - Value* from ValueAsMetadata::getValue() gone

So this is the two lines of code:

        ValueAsMetadata *v
static_cast<ValueAsMetadata*>(metadata->getOperand(i)->getOperand(0).get());
        Value *val = v->getValue();

After executing these two lines, in gdb:
(gdb) print val
$1 = (llvm::Value *) 0x0
(gdb) print v->getValue()
$2 = (llvm::Value *) 0x4346d68

How could this happen?

-- 
- Welson
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Could you provide full reproduction steps, if possible? (ie: reproducible
with existing LLVM source, or if necessary, a small patch - then exactly
what command line to run under GDB, where to break, step, print, etc)

On Thu, Jan 26, 2017 at 11:47 AM Welson Sun via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> So this is the two lines of code:
>
>         ValueAsMetadata *v >
static_cast<ValueAsMetadata*>(metadata->getOperand(i)->getOperand(0).get());
>         Value *val = v->getValue();
>
> After executing these two lines, in gdb:
> (gdb) print val
> $1 = (llvm::Value *) 0x0
> (gdb) print v->getValue()
> $2 = (llvm::Value *) 0x4346d68
>
> How could this happen?
>
> --
> - Welson
>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
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