It was first added in SSLeay 0.8.1 which predates OpenSSL let alone the LibreSSL fork.
It probably doesn’t exist in BoringSSL but neither does a lot of things. > On 28 Nov 2023, at 00:21, Tom Lane <t...@sss.pgh.pa.us> wrote: > > Michael Paquier <mich...@paquier.xyz> writes: >> Interesting. I have yet to look at that in details, but >> BIO_get_app_data() exists down to 0.9.8, which is the oldest version >> we need to support for stable branches. So that looks like a safe >> bet. > > What about LibreSSL? In general, I'm not too pleased with just assuming > that BIO_get_app_data exists. If we can do that, we can probably remove > most of the OpenSSL function probes that configure.ac has today. Even > if that's a good idea in HEAD, I doubt we want to do it all the way back. > > I'd be inclined to form the patch more along the lines of > s/BIO_get_data/BIO_get_app_data/g, with a configure check for > BIO_get_app_data and falling back to the existing direct use of > bio->ptr if it's not there. > > regards, tom lane
