From de96f632f8c68abfb80d7d45ba3ad0bc3f451bcd Mon Sep 17 00:00:00 2001
From: Philipp Otterbein <potterbein@blockstream.com>
Date: Tue, 8 Oct 2024 02:25:14 +0200
Subject: [PATCH] std::string_view shall not be null terminated

---
 src/libexpr/eval.cc | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/libexpr/eval.cc b/src/libexpr/eval.cc
index 8fbba7c14..f17753415 100644
--- a/src/libexpr/eval.cc
+++ b/src/libexpr/eval.cc
@@ -539,7 +539,7 @@ std::optional<EvalState::Doc> EvalState::getDoc(Value & v)
     if (v.isLambda()) {
         auto exprLambda = v.payload.lambda.fun;
 
-        std::ostringstream s(std::ios_base::out);
+        std::ostringstream s;
         std::string name;
         auto pos = positions[exprLambda->getPos()];
         std::string docStr;
@@ -571,8 +571,6 @@ std::optional<EvalState::Doc> EvalState::getDoc(Value & v)
 
         s << docStr;
 
-        s << '\0'; // for making a c string below
-
         return Doc {
             .pos = pos,
             .name = name,