From a7e71fb1015a41feed980615ca973d6540080a17 Mon Sep 17 00:00:00 2001
From: CuleX <cculex@gmail.com>
Date: Wed, 13 Sep 2017 14:27:45 +0200
Subject: [PATCH] Document that message and signature cannot overlap

The signature variable gets overwritten halfway through the crypto_sign
function and that value is then reused in multiple places.
---
 man/3monocypher/crypto_sign.3monocypher | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/man/3monocypher/crypto_sign.3monocypher b/man/3monocypher/crypto_sign.3monocypher
index 3eb47b4..99a0c46 100644
--- a/man/3monocypher/crypto_sign.3monocypher
+++ b/man/3monocypher/crypto_sign.3monocypher
@@ -65,6 +65,12 @@ function signs a message with your secret key
 .Fa secret_key .
 The public key is optional, and will be recomputed if not provided.
 However, this doubles execution time.
+The
+.Fa signature
+and the
+.Fa message
+argument
+.Em must not overlap .
 .Pp
 The
 .Fn crypto_check
-- 
2.47.3