llvm dev - Dec 2012 - [LLVMdev] LLVM segmentation fault / need use Instruction instead of Instruction*

Hello,

Thank you for your answer. If I want to use

then I have

error: ‘NodeTy* llvm::ilist_half_node<NodeTy>::getPrev() [with NodeTy
llvm::Instruction]’ is protected
error: ‘llvm::ilist_half_node<llvm::Instruction>’ is not an accessible
base
of ‘llvm::Instruction’

Do you know any other method to access the previous instruction of a
terminator instruction? PS: back() is not an option.

On Thu, Dec 20, 2012 at 12:06 PM, Stephen McGruer <stephen.mcgruer at
gmail.com
> wrote:
> current->getPrev()



-- 
Best regards,
Alexandru Ionut Diaconescu
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getPrevNode<http://llvm.org/docs/doxygen/html/classllvm_1_1ilist__node.html#a77b897207ef0a1ae95c404695aed9a4b>()
 Get the previous node, or 0 for the list head. I don't see any method like
hasPrevNode.
It can be a weird problem because "current->getPrevNode()" is
indicating to
"current" itself (the problem appears for the BB with only one
element)?




On Thu, Dec 20, 2012 at 12:42 PM, Alexandru Ionut Diaconescu <
alexandruionutdiaconescu at gmail.com> wrote:
> Hello,
>
> Thank you for your answer. If I want to use
>
> then I have
>
> error: ‘NodeTy* llvm::ilist_half_node<NodeTy>::getPrev() [with NodeTy
> llvm::Instruction]’ is protected
> error: ‘llvm::ilist_half_node<llvm::Instruction>’ is not an
accessible
> base of ‘llvm::Instruction’
>
> Do you know any other method to access the previous instruction of a
> terminator instruction? PS: back() is not an option.
>
> On Thu, Dec 20, 2012 at 12:06 PM, Stephen McGruer <
> stephen.mcgruer at gmail.com> wrote:
>
>> current->getPrev()
>
>
>
>
> --
> Best regards,
> Alexandru Ionut Diaconescu
>


-- 
Best regards,
Alexandru Ionut Diaconescu
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I solved by checking

if(BB->size()>1)

Thank you all for the help !

Now debugging the next segfault.

On Thu, Dec 20, 2012 at 12:59 PM, Alexandru Ionut Diaconescu <
alexandruionutdiaconescu at gmail.com> wrote:
>
getPrevNode<http://llvm.org/docs/doxygen/html/classllvm_1_1ilist__node.html#a77b897207ef0a1ae95c404695aed9a4b>()
>  Get the previous node, or 0 for the list head. I don't see any method
> like hasPrevNode.
> It can be a weird problem because "current->getPrevNode()" is
indicating
> to "current" itself (the problem appears for the BB with only one
element)?
>
>
>
>
>
> On Thu, Dec 20, 2012 at 12:42 PM, Alexandru Ionut Diaconescu <
> alexandruionutdiaconescu at gmail.com> wrote:
>
>> Hello,
>>
>> Thank you for your answer. If I want to use
>>
>> then I have
>>
>> error: ‘NodeTy* llvm::ilist_half_node<NodeTy>::getPrev() [with
NodeTy >> llvm::Instruction]’ is protected
>> error: ‘llvm::ilist_half_node<llvm::Instruction>’ is not an
accessible
>> base of ‘llvm::Instruction’
>>
>> Do you know any other method to access the previous instruction of a
>> terminator instruction? PS: back() is not an option.
>>
>> On Thu, Dec 20, 2012 at 12:06 PM, Stephen McGruer <
>> stephen.mcgruer at gmail.com> wrote:
>>
>>> current->getPrev()
>>
>>
>>
>>
>> --
>> Best regards,
>> Alexandru Ionut Diaconescu
>>
>
>
>
> --
> Best regards,
> Alexandru Ionut Diaconescu
>


-- 
Best regards,
Alexandru Ionut Diaconescu
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