Alvaro Herrera <alvhe...@2ndquadrant.com> writes: > On 2020-May-10, Alexander Lakhin wrote: >> 3. Explicitly call __gcov_flush in SIGQUIT handler (quickdie)?
> I tried your idea 3 a long time ago and my experiments didn't show an > increase in coverage [1]. But I like this idea the best, and maybe I > did something wrong. Attached is the patch I had (on top of > fc115d0f9fc6), but I don't know if it still applies. Putting ill-defined, not-controlled-by-us work into a quickdie signal handler sounds like a really bad idea to me. Maybe it's all right, since presumably it would only appear in specialized test builds; but even so, how much could you trust the results? > I think we should definitely get this fixed for pg13 ... -1 for shoving in such a thing so late in the cycle. We've survived without it for years, we can do so for a few months more. regards, tom lane