From: Dylan MacKenzie <ecstaticmorse@gmail.com>
Date: Mon, 5 Oct 2020 17:12:48 +0000 (-0700)
Subject: Print to `stderr` when a graphviz file can't be written
X-Git-Url: https://git.lizzy.rs/?a=commitdiff_plain;h=3b873987381cd8236b6f6e8129ad5c3570cbae68;p=rust.git

Print to `stderr` when a graphviz file can't be written

`warn` prints nothing by default
---

diff --git a/compiler/rustc_mir/src/dataflow/framework/engine.rs b/compiler/rustc_mir/src/dataflow/framework/engine.rs
index d77e741d1a3..c1e500d01b1 100644
--- a/compiler/rustc_mir/src/dataflow/framework/engine.rs
+++ b/compiler/rustc_mir/src/dataflow/framework/engine.rs
@@ -248,7 +248,7 @@ pub fn iterate_to_fixpoint(self) -> Results<'tcx, A>
 
         let res = write_graphviz_results(tcx, &body, &results, pass_name);
         if let Err(e) = res {
-            warn!("Failed to write graphviz dataflow results: {}", e);
+            error!("Failed to write graphviz dataflow results: {}", e);
         }
 
         results