[Bug c++/70182] c++filt fails to demangle _ZNSt17_Function_handlerIFSt4pairImjEjEZN5folly12addBenchmarkI3$_0EENSt9enable_ifIXeqsr5boost14function_types14function_arityIDTadsrT_onclEEE5valueLi2EEvE4typeEPKcSC_OS7_EUljE_E9_M_invokeERKSt9_Any_dataj

[ian at airs dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70182

--- Comment #11 from Ian Lance Taylor <ian at airs dot com> ---
g++ has generated (what I think is) the incorrect mangling since at least GCC
4.7, so this probably needs to be controlled by yet another -fabi-version
value.