On Friday, November 08, 2019 10:54:31 AM Roberto C. Sánchez wrote: > On Fri, Nov 08, 2019 at 10:49:47AM -0500, rhkra...@gmail.com wrote: > > On Friday, November 08, 2019 09:08:07 AM Roberto C. Sánchez wrote: > > > For example, the return type of a function can be changed from bool to > > > int and that will not change the SONAME. > > > > The items mentioned in the next sentences make sense to me in that they > > don't require a SONAME change, but I'm surprised that the return type of > > a function doesn't require a change? > > Well, as I understand it, since there is no single bit machine type, > bool as actually stored as an int. Changing from bool to int works > perfectly fine without affecting the ABI. However, changing from bool > or int to double would affect the ABI. In fact, I have a vague > recollection that you could even go from void to int since from an > implementation perspective void actually returns something on the stack > frame but it is just discarded. Though, I could very well be mistaken > there.
Ahh, ok -- understood, thanks!
