From 03c8f41868e21cdf75fea3a00a3b060fe7249b03 Mon Sep 17 00:00:00 2001
From: David Cook <divergentdave@gmail.com>
Date: Wed, 13 May 2020 20:02:21 -0500
Subject: [PATCH] Remove three unwraps from escaped_char

---
 src/parser/strings.rs | 30 +++++++++++++++---------------
 tests/fuzz_cases.rs   | 10 ++++++++++
 2 files changed, 25 insertions(+), 15 deletions(-)
 create mode 100644 tests/fuzz_cases.rs

diff --git a/src/parser/strings.rs b/src/parser/strings.rs
index bd2d42a5e..21aa611e7 100644
--- a/src/parser/strings.rs
+++ b/src/parser/strings.rs
@@ -315,22 +315,22 @@ fn escaped_char(input: &[u8]) -> IResult<&[u8], char> {
         tag("\\"),
         alt((
             value('\\', tag("\\")),
-            map(
-                terminated(
-                    recognize(many_m_n(
-                        1,
-                        6,
-                        one_of("0123456789ABCDEFabcdef"),
-                    )),
-                    opt(tag(" ")),
+            map_opt(
+                map_res(
+                    map_res(
+                        terminated(
+                            recognize(many_m_n(
+                                1,
+                                6,
+                                one_of("0123456789ABCDEFabcdef"),
+                            )),
+                            opt(tag(" ")),
+                        ),
+                        input_to_str,
+                    ),
+                    |s| u32::from_str_radix(s, 16),
                 ),
-                |hp| {
-                    std::char::from_u32(
-                        u32::from_str_radix(input_to_str(hp).unwrap(), 16)
-                            .unwrap(),
-                    )
-                    .unwrap()
-                },
+                std::char::from_u32
             ),
             take_char,
         )),
diff --git a/tests/fuzz_cases.rs b/tests/fuzz_cases.rs
new file mode 100644
index 000000000..2e179463c
--- /dev/null
+++ b/tests/fuzz_cases.rs
@@ -0,0 +1,10 @@
+use rsass::{compile_scss, output};
+
+#[test]
+fn bad_escape() {
+    let format = output::Format {
+        style: output::Style::Compressed,
+        precision: 5,
+    };
+    assert!(compile_scss(b"\\d00000", format).is_err());
+}