bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

don't bail when encountering many placeholders

Browse source
This commit is contained in:
lcnr 2024-10-21 17:51:43 +02:00
parent b64b25b99e
commit 919b61a6f4
4 changed files with 21 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

3
compiler/rustc_next_trait_solver/src/solve/eval_ctxt/canonical.rs
View file

@ -173,7 +173,8 @@ where
// causing a coherence error in diesel, see #131969. We still bail with verflow
// when later returning from the parent AliasRelate goal.
if !self.is_normalizes_to_goal {
let num_non_region_vars = canonical.variables.iter().filter(|c| !c.is_region()).count();
let num_non_region_vars =
canonical.variables.iter().filter(|c| !c.is_region() && c.is_existential()).count();
if num_non_region_vars > self.cx().recursion_limit() {
debug!(?num_non_region_vars, "too many inference variables -> overflow");
return Ok(self.make_ambiguous_response_no_constraints(MaybeCause::Overflow {