[Bug libstdc++/126452] Typo in check for --gc-sections support in acinclude.m4

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126452

--- Comment #8 from Sam James <sjames at gcc dot gnu.org> ---
[[[Ww]]] I think? Two for the escape