Revise never type fallback algorithm - #88804

Merged

bors merged 7 commits into

rust-lang:masterfrom

Mark-Simulacrum:never-algo-v2

Sep 24, 2021

Commits on Sep 17, 2021

introduce new fallback algorithm

nikomatsakis
authored and
Mark-Simulacrum
committed
2ee8914
remove diverging type variables from fn check

nikomatsakis
authored and
Mark-Simulacrum
committed
ebb8ff9
remove reliance on "diverging" type variables

nikomatsakis
authored and
Mark-Simulacrum
committed
1c004f2
stop categorizing inference variables as diverging when created

nikomatsakis
authored and
Mark-Simulacrum
committed
bc2ece2
optimization: use a single DepthFirstSearch instead of hashsets

nikomatsakis
authored and
Mark-Simulacrum
committed
59dc201
Add another case of fallback to () avoid breakage
Mark-Simulacrum
committed
078e3fd
Add nofallback tests
Mark-Simulacrum
committed
c4c5fc8