From 4b48d72eaa7f4d934f56bcf2b6d0348954977823 Mon Sep 17 00:00:00 2001
From: Jaken Herman <JakenHerman7@Gmail.com>
Date: Wed, 2 Oct 2024 00:24:42 -0500
Subject: [PATCH] Add `get_line` confusable to `Stdin::read_line()`

Add tests for addition of `#[rustc_confusables("get_line")]`
---
 library/std/src/io/stdio.rs                         |  1 +
 tests/ui/attributes/rustc_confusables_std_cases.rs  |  4 ++++
 .../attributes/rustc_confusables_std_cases.stderr   | 13 ++++++++++++-
 3 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/library/std/src/io/stdio.rs b/library/std/src/io/stdio.rs
index 6de069a518e..bf242e715bd 100644
--- a/library/std/src/io/stdio.rs
+++ b/library/std/src/io/stdio.rs
@@ -394,6 +394,7 @@ pub fn lock(&self) -> StdinLock<'static> {
     ///   in which case it will wait for the Enter key to be pressed before
     ///   continuing
     #[stable(feature = "rust1", since = "1.0.0")]
+    #[rustc_confusables("get_line")]
     pub fn read_line(&self, buf: &mut String) -> io::Result<usize> {
         self.lock().read_line(buf)
     }
diff --git a/tests/ui/attributes/rustc_confusables_std_cases.rs b/tests/ui/attributes/rustc_confusables_std_cases.rs
index d9121695950..4f6baea26df 100644
--- a/tests/ui/attributes/rustc_confusables_std_cases.rs
+++ b/tests/ui/attributes/rustc_confusables_std_cases.rs
@@ -23,4 +23,8 @@ fn main() {
     //~^ HELP you might have meant to use `push_str`
     String::new().append(""); //~ ERROR E0599
     //~^ HELP you might have meant to use `push_str`
+    let mut buffer = String::new();
+    let stdin = std::io::stdin();
+    stdin.get_line(&mut buffer).unwrap(); //~ ERROR E0599
+    //~^ HELP you might have meant to use `read_line`
 }
diff --git a/tests/ui/attributes/rustc_confusables_std_cases.stderr b/tests/ui/attributes/rustc_confusables_std_cases.stderr
index f4b6947ccd9..7bf96241ca7 100644
--- a/tests/ui/attributes/rustc_confusables_std_cases.stderr
+++ b/tests/ui/attributes/rustc_confusables_std_cases.stderr
@@ -106,7 +106,18 @@ help: you might have meant to use `push_str`
 LL |     String::new().push_str("");
    |                   ~~~~~~~~
 
-error: aborting due to 8 previous errors
+error[E0599]: no method named `get_line` found for struct `Stdin` in the current scope
+  --> $DIR/rustc_confusables_std_cases.rs:28:11
+   |
+LL |     stdin.get_line(&mut buffer).unwrap();
+   |           ^^^^^^^^ method not found in `Stdin`
+   |
+help: you might have meant to use `read_line`
+   |
+LL |     stdin.read_line(&mut buffer).unwrap();
+   |           ~~~~~~~~~
+
+error: aborting due to 9 previous errors
 
 Some errors have detailed explanations: E0308, E0599.
 For more information about an error, try `rustc --explain E0308`.