Should I recompile class implementation when non virtual function changes to virtual function?

Question

I have a old static library(class implement), I'd like to change a non virtual function to virtual function in a class, should I recompile the library?

Added [tag:vtable] because the vtable layout is affected. – curiousguy Jul 27 '16 at 21:59 — curiousguy, Jul 27 '16 at 21:59

score 4 · Answer 1 · answered Jul 26 '16 at 07:15

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Yes. You must recompile the library and applications using it.

answered Jul 26 '16 at 07:15

Jesper Juhl

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score 2 · Accepted Answer · answered Jul 26 '16 at 07:35

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I wanted to add little more reasoning to answer of @jesper Yes because now there will be new entry per new virtual function in vtable so recompilation is must.

answered Jul 26 '16 at 07:35

Ali Kazmi

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*And* because all calls to it will now have to go via the VFT. – user207421 Jul 26 '16 at 08:03
yes! VFT will be looked up by every call to object to this class. – Ali Kazmi Jul 26 '16 at 08:43

Should I recompile class implementation when non virtual function changes to virtual function?

2 Answers2