[Bug c/91815] questionable error on type definition at file scope

[joseph at codesourcery dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91815

--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot 
com> ---
Yes, that looks like a plausible fix (given testcase added to the 
testsuite and regression testing).