At 2020-09-29T07:08:20+1000, John Gardner wrote: > > > > echo foo | troff >&- > > Erh, yeah, that's… probably gonna cause issues... > > I get the same error you reported earlier, but why on Earth are you > closing the file descriptor?
He wasn't. groff was. I ran groff under gdb, set some break points, and single-stepped it. When I saw the line `delete the_output;' cause a SEGV after already having been executed once deduced that the `real_output_file` destructor was getting called recursively. The precise details have already rinsed out of my brain; I should probably have saved my gdb session and attached it to the bug. The column class destructor also calls `delete the_output`; perhaps it should be similarly guarded. Regards, Branden
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