From 91c43e73205d606778da9bb59e9c4665a55ab073 Mon Sep 17 00:00:00 2001
From: Jonas Nick <jonasd.nick@gmail.com>
Date: Tue, 16 Apr 2019 18:48:24 +0000
Subject: [PATCH] Add as_mut_ptr to PublicKey

---
 src/key.rs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/key.rs b/src/key.rs
index 2d90c2e84..e92290b0a 100644
--- a/src/key.rs
+++ b/src/key.rs
@@ -213,12 +213,18 @@ impl<'de> ::serde::Deserialize<'de> for SecretKey {
 }
 
 impl PublicKey {
-    /// Obtains a raw pointer suitable for use with FFI functions
+    /// Obtains a raw const pointer suitable for use with FFI functions
     #[inline]
     pub fn as_ptr(&self) -> *const ffi::PublicKey {
         &self.0 as *const _
     }
 
+    /// Obtains a raw mutable pointer suitable for use with FFI functions
+    #[inline]
+    pub fn as_mut_ptr(&mut self) -> *mut ffi::PublicKey {
+        &mut self.0 as *mut _
+    }
+
     /// Creates a new public key from a secret key.
     #[inline]
     pub fn from_secret_key<C: Signing>(secp: &Secp256k1<C>,