21 lines
		
	
	
		
			418 B
		
	
	
	
		
			Go
		
	
	
	
	
	
		
		
			
		
	
	
			21 lines
		
	
	
		
			418 B
		
	
	
	
		
			Go
		
	
	
	
	
	
|   | package vm | ||
|  | 
 | ||
|  | import ( | ||
|  | 	"fmt" | ||
|  | 
 | ||
|  | 	"github.com/ethereum/go-ethereum/params" | ||
|  | ) | ||
|  | 
 | ||
|  | func makeStackFunc(pop, push int) stackValidationFunc { | ||
|  | 	return func(stack *Stack) error { | ||
|  | 		if err := stack.require(pop); err != nil { | ||
|  | 			return err | ||
|  | 		} | ||
|  | 
 | ||
|  | 		if push > 0 && int64(stack.len()-pop+push) > params.StackLimit.Int64() { | ||
|  | 			return fmt.Errorf("stack limit reached %d (%d)", stack.len(), params.StackLimit.Int64()) | ||
|  | 		} | ||
|  | 		return nil | ||
|  | 	} | ||
|  | } |