Rollup merge of #131736 - hoodmane:emscripten-wasm-bigint, r=workingj…

…ubilee Emscripten: link with -sWASM_BIGINT When linking an executable without dynamic linking, this is a pure improvement. It significantly reduces code size and avoids a lot of buggy behaviors. It is supported in all browsers for many years and in all maintained versions of Node. It does change the ABI, so people who are dynamically linking with a library or executable that uses the old ABI may need to turn it off. It can be disabled if needed by passing `-Clink-arg -sWASM_BIGINT=0` to `rustc`. But few people will want to turn it off. Note this includes a libc bump to 0.2.162!
rust-lang · Nov 21, 2024 · 61878ec · 61878ec
2 parents 2d0ea79 + b071f64
commit 61878ec
Show file tree

Hide file tree

Showing 3 changed files with 5 additions and 4 deletions.
diff --git a/compiler/rustc_target/src/spec/targets/wasm32_unknown_emscripten.rs b/compiler/rustc_target/src/spec/targets/wasm32_unknown_emscripten.rs
@@ -5,7 +5,8 @@ use crate::spec::{
 pub(crate) fn target() -> Target {
     // Reset flags for non-Em flavors back to empty to satisfy sanity checking tests.
     let pre_link_args = LinkArgs::new();
-    let post_link_args = TargetOptions::link_args(LinkerFlavor::EmCc, &["-sABORTING_MALLOC=0"]);
+    let post_link_args =
+        TargetOptions::link_args(LinkerFlavor::EmCc, &["-sABORTING_MALLOC=0", "-sWASM_BIGINT"]);
 
     let opts = TargetOptions {
         os: "emscripten".into(),

diff --git a/library/Cargo.lock b/library/Cargo.lock
@@ -158,9 +158,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.161"
+version = "0.2.162"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e9489c2807c139ffd9c1794f4af0ebe86a828db53ecdc7fea2111d0fed085d1"
+checksum = "18d287de67fe55fd7e1581fe933d965a5a9477b38e949cfa9f8574ef01506398"
 dependencies = [
  "rustc-std-workspace-core",
 ]

diff --git a/library/std/Cargo.toml b/library/std/Cargo.toml
@@ -34,7 +34,7 @@ miniz_oxide = { version = "0.7.0", optional = true, default-features = false }
 addr2line = { version = "0.22.0", optional = true, default-features = false }
 
 [target.'cfg(not(all(windows, target_env = "msvc")))'.dependencies]
-libc = { version = "0.2.161", default-features = false, features = [
+libc = { version = "0.2.162", default-features = false, features = [
     'rustc-dep-of-std',
 ], public = true }