flewkey/cuberite-2a
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Fixed crash in ForEachEntityInBox API.

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Fixes #1511.
This commit is contained in:
madmaxoft 2014-10-06 13:48:44 +02:00
parent 75003e1537
commit 4e82a58060
3 changed files with 18 additions and 6 deletions
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14
src/Bindings/LuaState.cpp
View File

@ -861,6 +861,11 @@ void cLuaState::GetStackValue(int a_StackPos, eWeather & a_ReturnedVal)
void cLuaState::GetStackValue(int a_StackPos, pBoundingBox & a_ReturnedVal)
{
if (lua_isnil(m_LuaState, a_StackPos))
{
a_ReturnedVal = NULL;
return;
}
tolua_Error err;
if (tolua_isusertype(m_LuaState, a_StackPos, "cBoundingBox", false, &err))
{
@ -874,6 +879,11 @@ void cLuaState::GetStackValue(int a_StackPos, pBoundingBox & a_ReturnedVal)
void cLuaState::GetStackValue(int a_StackPos, pWorld & a_ReturnedVal)
{
if (lua_isnil(m_LuaState, a_StackPos))
{
a_ReturnedVal = NULL;
return;
}
tolua_Error err;
if (tolua_isusertype(m_LuaState, a_StackPos, "cWorld", false, &err))
{
@ -1396,10 +1406,8 @@ void cLuaState::LogStack(const char * a_Header)
void cLuaState::LogStack(lua_State * a_LuaState, const char * a_Header)
{
UNUSED(a_Header); // The param seems unused when compiling for release, so the compiler warns
// Format string consisting only of %s is used to appease the compiler
LOGD("%s", (a_Header != NULL) ? a_Header : "Lua C API Stack contents:");
LOG("%s", (a_Header != NULL) ? a_Header : "Lua C API Stack contents:");
for (int i = lua_gettop(a_LuaState); i > 0; i--)
{
AString Value;

2
src/Bindings/LuaState.h
View File

@ -304,7 +304,7 @@ public:
void ToString(int a_StackPos, AString & a_String);
/** Logs all the elements' types on the API stack, with an optional header for the listing. */
void LogStack(const char * a_Header);
void LogStack(const char * a_Header = NULL);
/** Logs all the elements' types on the API stack, with an optional header for the listing. */
static void LogStack(lua_State * a_LuaState, const char * a_Header = NULL);

8
src/Bindings/ManualBindings.cpp
View File

@ -697,8 +697,12 @@ static int tolua_ForEachInBox(lua_State * tolua_S)
Ty1 * Self = NULL;
cBoundingBox * Box = NULL;
L.GetStackValues(1, Self, Box);
ASSERT(Self != NULL); // We have verified the type at the top, so we should get valid objects here
ASSERT(Box != NULL);
if ((Self == NULL) || (Box == NULL))
{
LOGWARNING("Invalid world (%p) or boundingbox (%p)", Self, Box);
L.LogStackTrace();
return 0;
}
// Create a reference for the function:
cLuaState::cRef FnRef(L, 3);