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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/108969] [13/14 Regression] Initializing iostreams in
 the library needs a GLIBCXX_3.4.31 versioned symbol
Date: Fri, 28 Apr 2023 21:16:32 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108969

--- Comment #30 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Romain Geissler from comment #28)
> In other words, in general, is there any guarantee that something built
> using gcc N.X.0 can be run with the runtime of gcc N.Y.0 for X > Y ?

No. There have been several times where that was not possible:
https://gcc.gnu.org/onlinedocs/gcc-13.1.0/libstdc++/manual/manual/abi.html#=
abi.versioning.history

e.g. 7.2.0 had new symbols not present in 7.1.0, and 9.2.0 and 9.3.0 both
introduced new symbols compared to the previous release.=