From 6827c7b3c582a8fe30beb8ddb9e2446bfc391ea7 Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Thu, 1 Aug 2024 14:22:10 -0700
Subject: [PATCH] Fix json! invocations when std prelude is not in scope

---
 src/lib.rs    | 6 ++++++
 src/macros.rs | 6 +++---
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index 3225e26f0..4ef91095f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -373,6 +373,12 @@ extern crate alloc;
 #[cfg(feature = "std")]
 extern crate std;
 
+// Not public API. Used from macro-generated code.
+#[doc(hidden)]
+pub mod __private {
+    pub use alloc::vec;
+}
+
 #[cfg(feature = "std")]
 #[cfg_attr(docsrs, doc(cfg(feature = "std")))]
 #[doc(inline)]
diff --git a/src/macros.rs b/src/macros.rs
index 68e071026..c47bdf929 100644
--- a/src/macros.rs
+++ b/src/macros.rs
@@ -77,12 +77,12 @@ macro_rules! json_internal {
 
     // Done with trailing comma.
     (@array [$($elems:expr,)*]) => {
-        vec![$($elems,)*]
+        $crate::__private::vec![$($elems,)*]
     };
 
     // Done without trailing comma.
     (@array [$($elems:expr),*]) => {
-        vec![$($elems),*]
+        $crate::__private::vec![$($elems),*]
     };
 
     // Next element is `null`.
@@ -254,7 +254,7 @@ macro_rules! json_internal {
     };
 
     ([]) => {
-        $crate::Value::Array(vec![])
+        $crate::Value::Array($crate::__private::vec![])
     };
 
     ([ $($tt:tt)+ ]) => {