Method FreeAndRestoreFunctionVars

source/var.cpp:1140–1160

void Var::FreeAndRestoreFunctionVars(UserFunc &aFunc, VarBkp *&aVarBackup, int &aVarBackupCount)
{
	int i;
	for (i = 0; i < aFunc.mVars.mCount; ++i)
		aFunc.mVars.mItem[i]->Free(VAR_ALWAYS_FREE, true); // Pass "true" to exclude aliases, since their targets should not be freed (they don't belong to this function). Also resets the "uninitialized" attribute.

	// The freeing (above) MUST be done prior to the restore-from-backup below (otherwise there would be
	// a memory leak).  Static variables are never backed up and thus do not exist in the aVarBackup array.
	// This is because by definition, the contents of statics are not freed or altered by the calling procedure
	// (regardless how recursive or multi-threaded the function is).
	if (aVarBackup) // This is the indicator that a backup was made; thus a restore is also needed.
	{
		for (i = 0; i < aVarBackupCount; ++i) // Static variables were never backed up so they won't be in this array. See comments above.
		{
			VarBkp &bkp = aVarBackup[i];
			bkp.mVar->Restore(bkp);
		}
		free(aVarBackup);
		aVarBackup = NULL; // Some callers want this reset; it's an indicator of whether the next function call in this expression (if any) will have a backup.
	}
}