From a71fda40b865e23f0d191174f4584298534f2f75 Mon Sep 17 00:00:00 2001
From: Patrick Walton <pcwalton@mimiga.net>
Date: Fri, 6 May 2011 18:19:42 -0700
Subject: rustc: Make llvm_err() conform to Postel's law a little better

---
 src/comp/back/Link.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/comp/back/Link.rs b/src/comp/back/Link.rs
index 695d3202..89ed0d37 100644
--- a/src/comp/back/Link.rs
+++ b/src/comp/back/Link.rs
@@ -19,7 +19,12 @@ tag output_type {
 }
 
 fn llvm_err(session.session sess, str msg) {
-    sess.err(msg + ": " + Str.str_from_cstr(llvm.LLVMRustGetLastError()));
+    auto buf = llvm.LLVMRustGetLastError();
+    if ((buf as uint) == 0u) {
+        sess.err(msg);
+    } else {
+        sess.err(msg + ": " + Str.str_from_cstr(buf));
+    }
     fail;
 }
 
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