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

2 files changed, 6 insertions, 0 deletions

diff --git a/compiler/rustc_feature/src/builtin_attrs.rs b/compiler/rustc_feature/src/builtin_attrs.rs
index 327c70ede28..10867ae230a 100644
--- a/compiler/rustc_feature/src/builtin_attrs.rs
+++ b/compiler/rustc_feature/src/builtin_attrs.rs
@@ -929,6 +929,10 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[
         omit_gdb_pretty_printer_section, Normal, template!(Word), WarnFollowing,
         "the `#[omit_gdb_pretty_printer_section]` attribute is just used for the Rust test suite",
     ),
+    rustc_attr!(
+        TEST, pattern_complexity, CrateLevel, template!(NameValueStr: "N"),
+        ErrorFollowing, @only_local: true,
+    ),
 ];
 
 pub fn deprecated_attributes() -> Vec<&'static BuiltinAttribute> {
diff --git a/compiler/rustc_feature/src/unstable.rs b/compiler/rustc_feature/src/unstable.rs
index 53254d567cc..17c4d81474e 100644
--- a/compiler/rustc_feature/src/unstable.rs
+++ b/compiler/rustc_feature/src/unstable.rs
@@ -213,6 +213,8 @@ declare_features! (
     (internal, negative_bounds, "1.71.0", None),
     /// Allows using `#[omit_gdb_pretty_printer_section]`.
     (internal, omit_gdb_pretty_printer_section, "1.5.0", None),
+    /// Set the maximum pattern complexity allowed (not limited by default).
+    (internal, pattern_complexity, "CURRENT_RUSTC_VERSION", None),
     /// Allows using `#[prelude_import]` on glob `use` items.
     (internal, prelude_import, "1.2.0", None),
     /// Used to identify crates that contain the profiler runtime.