[Bug preprocessor/86079] preprocessor fails to splice lines

[jbeulich at novell dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86079

--- Comment #4 from jbeulich at novell dot com ---
(In reply to Andreas Schwab from comment #3)
> Did you use -xassembler-with-cpp?  Without that it's INVALID.

No, I did not, and the example given also is plain C code (minus the too many
backslashes, which I've added just for demonstrating the issue - if you reduce
them to one per line, I think you'll see the difference).