Add support for wasm exception handling to Emscripten target

Gated behind an unstable `-Z emscripten-wasm-eh` flag
2024-10-17 13:00:35 +02:00
parent bf6f8a4d32
commit 49c74234a7
21 changed files with 131 additions and 10 deletions
--- a/compiler/rustc_codegen_llvm/src/llvm_util.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm_util.rs
@@ -109,7 +109,10 @@ unsafe fn configure_llvm(sess: &Session) {
            add("-wasm-enable-eh", false);
        }

-        if sess.target.os == "emscripten" && sess.panic_strategy() == PanicStrategy::Unwind {
+        if sess.target.os == "emscripten"
+            && !sess.opts.unstable_opts.emscripten_wasm_eh
+            && sess.panic_strategy() == PanicStrategy::Unwind
+        {
            add("-enable-emscripten-cxx-exceptions", false);
        }