From cd64ff943889b1cda1029a4a0d906d934a47abeb Mon Sep 17 00:00:00 2001
From: Eduard-Mihai Burtescu <edy.burt@gmail.com>
Date: Sun, 16 Apr 2017 06:25:18 +0300
Subject: [PATCH] rustc_typeck: fix binops needing more type informations to
 coerce.

---
 src/librustc_typeck/check/op.rs                  | 2 ++
 src/test/run-pass/coerce-overloaded-autoderef.rs | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/src/librustc_typeck/check/op.rs b/src/librustc_typeck/check/op.rs
index 5b174aaf895..42296006b79 100644
--- a/src/librustc_typeck/check/op.rs
+++ b/src/librustc_typeck/check/op.rs
@@ -411,6 +411,8 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
         match method {
             Some(ok) => {
                 let method = self.register_infer_ok_obligations(ok);
+                self.select_obligations_where_possible();
+
                 let method_ty = method.ty;
 
                 // HACK(eddyb) Fully qualified path to work around a resolve bug.
diff --git a/src/test/run-pass/coerce-overloaded-autoderef.rs b/src/test/run-pass/coerce-overloaded-autoderef.rs
index a053311a040..091e29dd18a 100644
--- a/src/test/run-pass/coerce-overloaded-autoderef.rs
+++ b/src/test/run-pass/coerce-overloaded-autoderef.rs
@@ -68,4 +68,8 @@ fn use_vec_ref(v: &Vec<u8>) {
     use_slice(&&&mut &&&v);
 }
 
+fn use_op_rhs(s: &mut String) {
+    *s += {&String::from(" ")};
+}
+
 pub fn main() {}