Also gate emscripten_wasm_em cfg on is_nightly_build

hoodmane · hoodmane · commit 610794e229f3 · 2025-01-03T14:27:22.000+01:00
diff --git a/compiler/rustc_session/src/config/cfg.rs b/compiler/rustc_session/src/config/cfg.rs
@@ -296,7 +296,8 @@ pub(crate) fn default_configuration(sess: &Session) -> Cfg {
         ins_none!(sym::ub_checks);
     }
 
-    if sess.opts.unstable_opts.emscripten_wasm_eh {
+    // Nightly-only implementation detail for the `panic_unwind` and `unwind` crates.
+    if sess.is_nightly_build() && sess.opts.unstable_opts.emscripten_wasm_eh {
         ins_none!(sym::emscripten_wasm_eh);
     }
     ret

Original file line number	Diff line number	Diff line change
`@@ -296,7 +296,8 @@ pub(crate) fn default_configuration(sess: &Session) -> Cfg {`
`296`	`296`	`ins_none!(sym::ub_checks);`
`297`	`297`	`}`
`298`	`298`
`299`		`- if sess.opts.unstable_opts.emscripten_wasm_eh {`
	`299`	+ // Nightly-only implementation detail for the `panic_unwind` and `unwind` crates.
	`300`	`+ if sess.is_nightly_build() && sess.opts.unstable_opts.emscripten_wasm_eh {`
`300`	`301`	`ins_none!(sym::emscripten_wasm_eh);`
`301`	`302`	`}`
`302`	`303`	`ret`