On Tuesday, 24 April 2018 at 18:53:02 UTC, H. S. Teoh wrote:
Yesterday afternoon I ran into a performance issue in one of my
D projects, and thought, "well, it's simple, just compile with
-profile, identify the hotspot, optimize". Unfortunately,
doing that triggered a latent codegen bug in -O that randomly
causes runtime segfaults, basically halting all progress. I
spent all morning today to reduce the code in order to identify
the codegen bug:
https://issues.dlang.org/show_bug.cgi?id=18794
In the report you forgot to mention that the bug is only visible
with -O -profile.
With just -O the provided test case works fine.
