http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56599
--- Comment #4 from Dave <davecat49 at gmail dot com> 2013-03-11 18:42:41 UTC --- It looks as though it threw away everything I'd typed in when I added an attachment, & then submitted the empty report. <sigh> gcc produced extremely confusing error messages, referencing perfectly valid line:columns, or (under debugging) referencing location in previously #included header file. The bug would have been easily recognized if anything had indicated the correct location, but the messages weren't especially descriptive. Instead of pasting them in, I'll try attaching the programs as well, this time. See the .c versions & the error messages in the .txt files. I guess I'm supposed to post this, then attach? I'll try it that way.
