[coliveira]

Exactly! Shared libraries mean that new code with modified behavior can and will be called when made available, independent of how the original code was compiled. It is interesting that people come out to complain about this obvious behavior.

[hermitdev]

The problem isn't changing implementation. This is expected with shared libs. The problem is changing the contract of the function and then expecting it to be drop in compatible. It's not. It _should_ be treated as a breaking ABI change, because the old behavior and new behavior are not compatible, yet it's being masqueraded as such. It's quite literally the same behavior/attitude behind the "w" vs "wt" change that led to aCropolyse.