Hello, r190783 breaks bootstrap on powerpc64-unknown-linux-gnu. The problem is caused by a regexp that used to check for space|tab before the patch but now only looks for tab. The attached patch fixes this problem for me, but I'm not sure why (I haven't tried to look into the details of the problem, I've simply reverted parts of the commit that broke things for me).
Can a libstdc++ maintainer please have a look? Ciao! Steven
PR54453.diff
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