From cfff1b4c12607dc3c74d468140aad7f6fdbae6f0 Mon Sep 17 00:00:00 2001
From: 12101111 <w12101111@gmail.com>
Date: Tue, 10 Mar 2020 15:36:23 +0800
Subject: [PATCH] When `crate_type` is `None`,check compiler options

---
 src/librustc_session/session.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/librustc_session/session.rs b/src/librustc_session/session.rs
index 3cb8ba4af11..ef09813b6ca 100644
--- a/src/librustc_session/session.rs
+++ b/src/librustc_session/session.rs
@@ -559,7 +559,7 @@ impl Session {
         if found_positive || found_negative {
             found_positive
         } else if crate_type == Some(config::CrateType::ProcMacro)
-            || self.opts.crate_types.contains(&config::CrateType::ProcMacro)
+            || crate_type == None && self.opts.crate_types.contains(&config::CrateType::ProcMacro)
         {
             // FIXME: When crate_type is not available,
             // we use compiler options to determine the crate_type.