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Fix bug in plugin caused by not popping the closure from the stack after calling it.

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This would've caused the plugin to run out of stack memory eventually.
This commit is contained in:
Sandu Liviu Catalin
2018-07-05 21:01:08 +03:00
parent 50dec8d958
commit f51b4968ac
3 changed files with 19 additions and 1 deletions
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16
include/sqrat/sqratUtil.h
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@ -1506,7 +1506,7 @@ struct StackGuard
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
~StackGuard()
{
sq_pop(m_VM, sq_gettop(m_VM) - m_Top);
Restore();
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
@ -1519,6 +1519,20 @@ struct StackGuard
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
StackGuard & operator = (StackGuard &&) = delete;
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// Restore the stack to what was known to be.
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
void Restore() const
{
// Retrieve the new stack top
const SQInteger top = sq_gettop(m_VM);
// Did the stack size change?
if (top > m_Top)
{
sq_pop(m_VM, top - m_Top); // Trim the stack
}
}
private:
HSQUIRRELVM m_VM; ///< The VM where the stack should be restored.