> Hi,
> 
> This patch doesn't allow instrumentation thunks calls while merging 
> constructors and destructors.  Not isntrumented code is not affeceted.  
> Bootstrapped and tested on x86_64-unknown-linux-gnu.  OK for trunk?
> 
> Thanks,
> Ilya
> --
> gcc/
> 
> 2015-04-02  Ilya Enkovich  <ilya.enkov...@intel.com>
> 
>       * ipa.c (ipa_cdtor_merge): Skip instrumentation thunks.

So the problem here is that you do have two names for the function, one that
is not instrumented and other that is instrumented?  I am bit surprised we get
instrumentation on ctors that should not take or return pointer parameter,
but I see one can trigger that at least by manually adding constructor 
attribute.

I think what you need is to drop DECL_STATIC_CONSTRUCTOR/DESTRUCTURO flags when
producing the transparent alias.

Honza

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