Assertion fails while reverse-continuing after setting watchpoint

[SeanHeelan]

Hey,

While trying to reverse continue after setting a watchpoint I get the following error:

rr: /home/sean/Documents/git/rr/rr/src/ReplayTimeline.cc:213: void rr::ReplayTimeline::mark_after_singlestep(const rr::ReplayTimeline::Mark&, const rr::ReplayResult&): Assertion `i + 1 < mark_vector.size() && mark_vector[i + 1] == m.ptr' failed.

On a similar issue I saw you requested the output with RR_LOG=GdbConnection set, so I've gathered that and you can find it at https://gist.github.com/SeanHeelan/a424c20e0d63c255755a6205174daaee

I am using the latest version from the master branch (1a16633), on Fedora 24 with a 4.8.4 kernel. The target application is a variant of the klee symbolic execution engine.

If you need any further details let me know!

[SeanHeelan]

I've just realised that the watchpoint doesn't actually seem to have anything to do with the assertion failure. Instead of setting the watchpoint and running reverse-continue, if I simply run reverse-continue the same issue occurs.

[rocallahan]

Actually I need RR_LOG=GdbConnection,ReplayTimeline.

[rocallahan]

Also I'll add some more logging to ReplayTimeline to help with bugs like this.

[rocallahan]

OK try again with 58945ff