[Bug debug/70578] internal compiler error: in output_index_string, at dwarf2out.c with -gsplit-dwarf

[ishikawa at yk dot rim.or.jp]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70578

--- Comment #3 from ishikawa,chiaki <ishikawa at yk dot rim.or.jp> ---
I noticed that in my case, it could be related to a name space issue since
U_NAMESPACE_END "}}" is to close the corresponding U_NAMESPACE_BEGIN "extern
"C++" "{ namespace U_ICU_NAMESPACE {".