[Bug libstdc++/108969] [13 Regression] Initializing iostreams in the library needs a GLIBCXX_3.4.31 versioned symbol

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108969

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The patch above means that a program using cout (or any of the standard
streams) gets:

0000000000404040 B _ZSt4cout@GLIBCXX_3.4.31

instead of:

0000000000404040 B _ZSt4cout@GLIBCXX_3.4

And then it fails to run with the older libstdc++.so:

./a.out: /lib64/libstdc++.so.6: version `GLIBCXX_3.4.31' not found (required by
./a.out)


But I agree that it's not a complete solution for all targets, just a quick fix
for linux distros where this is most likely to cause problems today.