From e95b218319439ad790cdf38f3bb878c94db85da0 Mon Sep 17 00:00:00 2001
From: Cecile Tonglet <cecile.tonglet@cecton.com>
Date: Sun, 12 Jul 2020 12:32:09 +0200
Subject: [PATCH] WIP

Forked at: aaee91222802471c656480ddb49b6f1e53a69a96
Parent branch: origin/master
---
 src/format/mod.rs | 7 +++++++
 src/lib.rs        | 4 +++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/format/mod.rs b/src/format/mod.rs
index 1d4c7cb57e..ad889c3844 100644
--- a/src/format/mod.rs
+++ b/src/format/mod.rs
@@ -38,6 +38,7 @@ use offset::{FixedOffset, Offset};
 use {Datelike, Timelike};
 use {ParseWeekdayError, Weekday};
 
+#[cfg(any(feature = "alloc", feature = "std", test))]
 mod locales;
 
 pub use self::parse::parse;
@@ -382,9 +383,11 @@ const BAD_FORMAT: ParseError = ParseError(ParseErrorKind::BadFormat);
 
 /// An error from a "format" function.
 #[derive(Debug, Clone, PartialEq, Eq, Copy)]
+#[cfg(any(feature = "alloc", feature = "std", test))]
 pub struct FormatError(FormatErrorKind);
 
 /// The category of format error.
+#[cfg(any(feature = "alloc", feature = "std", test))]
 #[derive(Debug, Clone, PartialEq, Eq, Copy)]
 enum FormatErrorKind {
     /// The locale is unknown or not available.
@@ -402,11 +405,14 @@ enum FormatErrorKind {
 }
 
 /// Same as `Result<T, FormatError>`.
+#[cfg(any(feature = "alloc", feature = "std", test))]
 pub type FormatResult<T> = Result<T, FormatError>;
 
+#[cfg(any(feature = "alloc", feature = "std", test))]
 impl fmt::Display for FormatError {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         match self.0 {
+            #[cfg(feature = "locales")]
             FormatErrorKind::UnknownLocale => write!(f, "the locale is unknown or not available"),
             FormatErrorKind::Format => write!(f, "{}", fmt::Error),
             FormatErrorKind::InsufficientArguments => {
@@ -425,6 +431,7 @@ impl Error for FormatError {
     }
 }
 
+#[cfg(any(feature = "alloc", feature = "std", test))]
 impl From<fmt::Error> for FormatError {
     fn from(_err: fmt::Error) -> Self {
         FormatError(FormatErrorKind::Format)
diff --git a/src/lib.rs b/src/lib.rs
index b80529f155..1020770b00 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -452,7 +452,9 @@ pub use date::{Date, MAX_DATE, MIN_DATE};
 #[cfg(feature = "rustc-serialize")]
 pub use datetime::rustc_serialize::TsSeconds;
 pub use datetime::{DateTime, SecondsFormat, MAX_DATETIME, MIN_DATETIME};
-pub use format::{FormatError, FormatResult, ParseError, ParseResult};
+#[cfg(any(feature = "alloc", feature = "std", test))]
+pub use format::{FormatError, FormatResult};
+pub use format::{ParseError, ParseResult};
 #[doc(no_inline)]
 pub use naive::{IsoWeek, NaiveDate, NaiveDateTime, NaiveTime};
 #[cfg(feature = "clock")]