From: SmallJoker <mk939@ymail.com>
Date: Mon, 14 May 2018 19:03:48 +0000 (+0200)
Subject: Fix segfault in player migration and crash in log_deprecated
X-Git-Tag: 5.0.0~411
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=a1598e1b;p=oweals%2Fminetest.git

Fix segfault in player migration and crash in log_deprecated

Makes log_deprecated work when triggered from no function
---

diff --git a/src/content_sao.cpp b/src/content_sao.cpp
index 1c049c727..6ed78beb0 100644
--- a/src/content_sao.cpp
+++ b/src/content_sao.cpp
@@ -1166,8 +1166,12 @@ void PlayerSAO::setBasePosition(const v3f &position)
 
 	// This needs to be ran for attachments too
 	ServerActiveObject::setBasePosition(position);
-	m_env->updateActiveObject(this);
-	m_position_not_sent = true;
+
+	// Updating is not wanted/required for player migration
+	if (m_env) {
+		m_env->updateActiveObject(this);
+		m_position_not_sent = true;
+	}
 }
 
 void PlayerSAO::setPos(const v3f &pos)
diff --git a/src/script/common/c_internal.cpp b/src/script/common/c_internal.cpp
index 3d766a955..9a24b0e78 100644
--- a/src/script/common/c_internal.cpp
+++ b/src/script/common/c_internal.cpp
@@ -153,7 +153,9 @@ void log_deprecated(lua_State *L, const std::string &message)
 		warningstream << message;
 		if (L) { // L can be NULL if we get called from scripting_game.cpp
 			lua_Debug ar;
-			FATAL_ERROR_IF(!lua_getstack(L, 2, &ar), "lua_getstack() failed");
+
+			if (!lua_getstack(L, 2, &ar))
+				FATAL_ERROR_IF(!lua_getstack(L, 1, &ar), "lua_getstack() failed");
 			FATAL_ERROR_IF(!lua_getinfo(L, "Sl", &ar), "lua_getinfo() failed");
 			warningstream << " (at " << ar.short_src << ":" << ar.currentline << ")";
 		}