Implement lowering of if-let guards to MIR

2020-11-13 18:27:27 +01:00 · 2020-11-13 18:27:27 +01:00 · f3d4aa6afb
commit f3d4aa6afb
parent bab20800f0
7 changed files with 84 additions and 11 deletions
--- a/compiler/rustc_passes/src/check_const.rs
+++ b/compiler/rustc_passes/src/check_const.rs
@ -45,6 +45,8 @@ impl NonConstExpr {
                return None;
            }

+            Self::Match(IfLetGuardDesugar) => bug!("if-let guard outside a `match` expression"),
+
            // All other expressions are allowed.
            Self::Loop(Loop | While | WhileLet)
            | Self::Match(