On Fri, 18 Mar 2022 at 11:49, Rainer Orth wrote: > > Hi Jonathan, > > > Tested x86_64-linux and sparc-sun-solaris2.11 (but 11.3 only). > > > > Pushed to trunk. > > > > Rainer, this should allow you to continue omitting the > > _ZSt10from_charsPKcS0_R[def]St12chars_format symbols from the baseline, > > without the current FAIL. Please check on your other Solaris targets. > > I've run bootstraps on i386-pc-solaris2.11 (Solaris 11.3 and 11.4) and > sparc-sun-solaris2.11 (Solaris 11.4) last night: the abi_check failures > are gone everywhere.
Hooray! I did some very brief testing and it seemed like a program linked to the Solaris 11.3 libstdc++.so.6.0.30 (with from_chars@GLIBCXX_3.4.30) can still run against libstdc++.so.6.0.30 with from_chars@GLIBCXX_3.4.29 (which should match what you get on Solaris 11.4 if I correctly fiddled with the versioning). So I don't understand how the Solaris runtime linker handles symbol versions, but it seems like there's no backwards compatibility problem for the Solaris 11.4 build of libstdc++.so.6.0.30.
