On 27 November 2017 at 02:39, Mike Gulick wrote: > I still haven't had any success trying to track down the source of the issue in > the debugger. However I did have success in creating a simple reproduction > case. This bug *is* dependent on crossing over LINE_MAP_MAX_LOCATION_WITH_COLS, > so the reproducer includes a simple gcc plugin that sets the line map's > highest_location field before the preprocessor runs. I have created bug 83173 > and have attached the reproduction source code to that bug. Thanks, that should help somebody to figure it out.