https://issues.dlang.org/show_bug.cgi?id=19213
Justin <mrjn...@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mrjn...@gmail.com Severity|normal |regression --- Comment #3 from Justin <mrjn...@gmail.com> --- I ran into this myself when attempting compile a service that we've had in production for more than a year after updating to DMD 2.083.0. I was able to create a small artificial repro case, runnable here: https://run.dlang.io/is/ssx7CP import std.algorithm; import std.range; void main() { static struct Rec { int foo; } auto results = [[1,2], [3,4]] .map!(q => q.map!Rec.chunkBy!"a.foo") .joiner; } This is definitely a regression as this code builds with DMD 2.080.1 and prior. --