[fpc-devel] Corrected test and patch

[Sergei Gorelkin]

Sergei Gorelkin wrote:
> 
> I'll be digging further in.
> 
Here goes. I modified the test so that it fails reliably, and patched 
the compiler so that is doesn't fail again.
It was a bit tricky to get a string with refcount=1 without telling the 
compiler to take its address.
As for the patch, I could not invent anything more clever than comparing 
the assignment target with all function parameters one by one. Also 
typeconversion nodes may have to be handled.

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