From 082e18f9a1f9f48437229c34bc092ebf98be440d Mon Sep 17 00:00:00 2001
From: Manish Goregaokar <manishsmail@gmail.com>
Date: Fri, 20 Aug 2021 21:57:06 -0700
Subject: [PATCH] Rust supports i128/u128 on emscripten post Rust 1.40

---
 serde/build.rs | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/serde/build.rs b/serde/build.rs
index afda29113..392647964 100644
--- a/serde/build.rs
+++ b/serde/build.rs
@@ -53,9 +53,10 @@ fn main() {
     // 128-bit integers stabilized in Rust 1.26:
     // https://blog.rust-lang.org/2018/05/10/Rust-1.26.html
     //
-    // Disabled on Emscripten targets as Emscripten doesn't
-    // currently support integers larger than 64 bits.
-    if minor >= 26 && !emscripten {
+    // Disabled on Emscripten targets before Rust 1.40 since
+    // Emscripten did not support 128-bit integers until Rust 1.40
+    // (https://github.com/rust-lang/rust/pull/65251)
+    if minor >= 26 && (!emscripten || minor >= 40) {
         println!("cargo:rustc-cfg=integer128");
     }