Auto merge of #72948 - Dylan-DPC:rollup-fazhw00, r=Dylan-DPC

Rollup of 5 pull requests

Successful merges:

 - #72586 (split select into submodules)
 - #72900 (Don't count pathless --extern for unused-crate-dependencies warnings)
 - #72924 (Stabilize `std::io::Buf{Reader, Writer}::capacity`)
 - #72942 (clean up E0641 explanation)
 - #72945 (Updated documentation for Control Flow Guard)

Failed merges:

r? @ghost

1 files changed, 12 insertions, 0 deletions

diff --git a/src/test/ui/unused-crate-deps/ignore-pathless-extern.rs b/src/test/ui/unused-crate-deps/ignore-pathless-extern.rs
new file mode 100644
index 00000000000..8c273cb534d
--- /dev/null
+++ b/src/test/ui/unused-crate-deps/ignore-pathless-extern.rs
@@ -0,0 +1,12 @@
+// Pathless --extern references don't count
+
+// edition:2018
+// check-pass
+// aux-crate:bar=bar.rs
+// compile-flags:--extern proc_macro
+
+#![warn(unused_crate_dependencies)]
+
+use bar as _;
+
+fn main() {}