handle edge-case of a recursion limit of 0

rust-lang · Aug 29, 2023 · 0e1e964 · 0e1e964
1 parent bb90f81
commit 0e1e964
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/compiler/rustc_trait_selection/src/solve/search_graph/mod.rs b/compiler/rustc_trait_selection/src/solve/search_graph/mod.rs
@@ -53,7 +53,7 @@ impl<'tcx> SearchGraph<'tcx> {
     pub(super) fn new(tcx: TyCtxt<'tcx>, mode: SolverMode) -> SearchGraph<'tcx> {
         Self {
             mode,
-            local_overflow_limit: tcx.recursion_limit().0.ilog2() as usize,
+            local_overflow_limit: tcx.recursion_limit().0.checked_ilog2().unwrap_or(0) as usize,
             stack: Default::default(),
             provisional_cache: ProvisionalCache::empty(),
         }