From 030b1ed7f709539f5ca422758e9fe00d173aee76 Mon Sep 17 00:00:00 2001
From: Jethro Beekman <jethro@fortanix.com>
Date: Mon, 27 Aug 2018 09:57:51 -0700
Subject: Refactor stderr_prints_nothing into a more modular function

---
 src/libstd/sys/wasm/stdio.rs | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'src/libstd/sys/wasm')

diff --git a/src/libstd/sys/wasm/stdio.rs b/src/libstd/sys/wasm/stdio.rs
index 023f29576a2..e51aba75333 100644
--- a/src/libstd/sys/wasm/stdio.rs
+++ b/src/libstd/sys/wasm/stdio.rs
@@ -70,6 +70,10 @@ pub fn is_ebadf(_err: &io::Error) -> bool {
     true
 }
 
-pub fn stderr_prints_nothing() -> bool {
-    !cfg!(feature = "wasm_syscall")
+pub fn panic_output() -> Option<impl io::Write> {
+    if cfg!(feature = "wasm_syscall") {
+        Stderr::new().ok()
+    } else {
+        None
+    }
 }
-- 
cgit 1.4.1-3-g733a5