commit 66c5f24788652a49b528f14e23e8121ad0935ace (trunk)
commit 5f772bd9847cdbf6a7a6d856de87cb65472d56f4 (releases/gcc11)

As approved by Jonathan Wakely in the comments to PR libstdc++/100361 .
Bootstrapped and regression tested on x86_64-pc-linux.gnu.