Hello Michael,
> I'm writing an extension installer. I want to write the installer in
> PHP. This presents a problem if the extension was previously installed and
> is automatically being loaded because it can segfault after overwriting
> the .so module file.
>   

IIRC, the correct way to replace .so files is to unlink() them first and
then write the new file into place.

Greetings,
Stefan

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