From e5ed440136810e1f53bc0164698a49825d9f330b Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Sun, 25 Mar 2018 12:32:06 +0200
Subject: [PATCH] Always check flatten assertions

---
 serde_derive/src/de.rs              | 10 +++++-----
 serde_derive_internals/src/check.rs |  2 +-
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/serde_derive/src/de.rs b/serde_derive/src/de.rs
index 456773a8..7bfb8e56 100644
--- a/serde_derive/src/de.rs
+++ b/serde_derive/src/de.rs
@@ -349,7 +349,7 @@ fn deserialize_tuple(
         split_with_de_lifetime(params);
     let delife = params.borrowed.de_lifetime();
 
-    debug_assert!(!cattrs.has_flatten());
+    assert!(!cattrs.has_flatten());
 
     // If there are getters (implying private fields), construct the local type
     // and use an `Into` conversion to get the remote type. If there are no
@@ -446,7 +446,7 @@ fn deserialize_tuple_in_place(
         split_with_de_lifetime(params);
     let delife = params.borrowed.de_lifetime();
 
-    debug_assert!(!cattrs.has_flatten());
+    assert!(!cattrs.has_flatten());
 
     let is_enum = variant_ident.is_some();
     let expecting = match variant_ident {
@@ -2104,7 +2104,7 @@ fn deserialize_struct_as_struct_visitor(
     fields: &[Field],
     cattrs: &attr::Container,
 ) -> (Fragment, Option<Fragment>, Fragment) {
-    debug_assert!(!cattrs.has_flatten());
+    assert!(!cattrs.has_flatten());
 
     let field_names_idents: Vec<_> = fields
         .iter()
@@ -2354,7 +2354,7 @@ fn deserialize_struct_as_struct_in_place_visitor(
     fields: &[Field],
     cattrs: &attr::Container,
 ) -> (Fragment, Option<Fragment>, Fragment) {
-    debug_assert!(!cattrs.has_flatten());
+    assert!(!cattrs.has_flatten());
 
     let field_names_idents: Vec<_> = fields
         .iter()
@@ -2383,7 +2383,7 @@ fn deserialize_map_in_place(
     fields: &[Field],
     cattrs: &attr::Container,
 ) -> Fragment {
-    debug_assert!(!cattrs.has_flatten());
+    assert!(!cattrs.has_flatten());
 
     // Create the field names for the fields.
     let fields_names: Vec<_> = fields
diff --git a/serde_derive_internals/src/check.rs b/serde_derive_internals/src/check.rs
index dd37085d..31980a39 100644
--- a/serde_derive_internals/src/check.rs
+++ b/serde_derive_internals/src/check.rs
@@ -45,7 +45,7 @@ fn check_getter(cx: &Ctxt, cont: &Container) {
 fn check_flatten(cx: &Ctxt, cont: &Container) {
     match cont.data {
         Data::Enum(_) => {
-            debug_assert!(!cont.attrs.has_flatten());
+            assert!(!cont.attrs.has_flatten());
         }
         Data::Struct(_, _) => {
             for field in cont.data.all_fields() {