Auto merge of #121937 - GuillaumeGomez:rollup-9684vg3, r=GuillaumeGomez

Rollup of 3 pull requests

Successful merges:

 - #121917 (Add new `pattern_complexity` attribute to add possibility to limit and check recursion in pattern matching)
 - #121933 (Add missing get_name for wasm::thread.)
 - #121934 (rustc_log: expose tracing-tree "wraparound" in an env var)

r? `@ghost`
`@rustbot` modify labels: rollup

1 files changed, 9 insertions, 2 deletions

diff --git a/compiler/rustc_middle/src/middle/limits.rs b/compiler/rustc_middle/src/middle/limits.rs
index 344ea38192e..4d698012749 100644
--- a/compiler/rustc_middle/src/middle/limits.rs
+++ b/compiler/rustc_middle/src/middle/limits.rs
@@ -40,6 +40,13 @@ pub fn get_recursion_limit(krate_attrs: &[Attribute], sess: &Session) -> Limit {
 }
 
 fn get_limit(krate_attrs: &[Attribute], sess: &Session, name: Symbol, default: usize) -> Limit {
+    match get_limit_size(krate_attrs, sess, name) {
+        Some(size) => Limit::new(size),
+        None => Limit::new(default),
+    }
+}
+
+pub fn get_limit_size(krate_attrs: &[Attribute], sess: &Session, name: Symbol) -> Option<usize> {
     for attr in krate_attrs {
         if !attr.has_name(name) {
             continue;
@@ -47,7 +54,7 @@ fn get_limit(krate_attrs: &[Attribute], sess: &Session, name: Symbol, default: u
 
         if let Some(s) = attr.value_str() {
             match s.as_str().parse() {
-                Ok(n) => return Limit::new(n),
+                Ok(n) => return Some(n),
                 Err(e) => {
                     let value_span = attr
                         .meta()
@@ -69,5 +76,5 @@ fn get_limit(krate_attrs: &[Attribute], sess: &Session, name: Symbol, default: u
             }
         }
     }
-    return Limit::new(default);
+    None
 }