The replacement is not without issues: each package can pick an ABI, nothing is enforced. A define in C toggles time_t between 32 and 64 bits, so if that struct

The replacement is not without issues: each package can pick an ABI, nothing is enforced. A define in C toggles time_t between 32 and 64 bits, so if that struct is exposed in a library, dependents have to deal with it. Similar of course to 32 vs 64 bit file offsets.