Slimv 回溯不显示局部变量

Question

我刚刚安装了Slimv来最大限度地破解lisp，但是我无法从调试器中得到任何有用的东西。

如果我输入REPL

(+ 1 a)

我得到以下错误，这是好的

EVAL: variable A has no value
   [Condition of type SYSTEM::SIMPLE-UNBOUND-VARIABLE]

…它伴随着疯狂的回溯

Backtrace:
0: [520] frame binding variables (~ = dynamically):  | ~ SWANK::*SLDB-STEPPING-P* <--> NIL 
    No locals
1: [517] frame binding variables (~ = dynamically):  | ~ SWANK::*SLDB-LEVEL* <--> 0
2: [514] frame binding variables (~ = dynamically):  | ~ *PACKAGE* <--> #<PACKAGE COMMON-LISP-USER>
3: <1/507> #<COMPILED-FUNCTION SWANK::DEBUG-IN-EMACS>[506] frame binding variables (~ = dynamically):  | ~ SWANK::*SLIME-INTERRUPTS-ENABLED* <--> T
4: <1/501> #<COMPILED-FUNCTION SWANK:INVOKE-SLIME-DEBUGGER>- #<COMPILED-FUNCTION SWANK::SWANK-DEBUGGER-HOOK-2-1>
5: <1/499> #<COMPILED-FUNCTION SWANK::SWANK-DEBUGGER-HOOK-2-1>- #<COMPILED-FUNCTION SWANK::SWANK-DEBUGGER-HOOK-2-1>
6: [498] frame binding variables (~ = dynamically):  | ~ *DEBUGGER-HOOK* <--> NIL
7: <1/494> #<COMPILED-FUNCTION #:|877 882 (DEFINTERFACE CALL-WITH-DEBUGGER-HOOK (HOOK FUN) ...)-84-3-1|>- #<COMPILED-FUNCTION #:|877 882 (DEFINTERFACE CALL-WITH-DEBUGGER-HOOK (HOOK FUN) ...)-84-3-1|>
8: <1/489> #<COMPILED-FUNCTION SWANK-BACKEND:CALL-WITH-DEBUGGER-HOOK>- #<COMPILED-FUNCTION SWANK::SWANK-DEBUGGER-HOOK-2>
9: <1/486> #<COMPILED-FUNCTION SWANK::SWANK-DEBUGGER-HOOK-2>- #<COMPILED-FUNCTION SWANK::SWANK-DEBUGGER-HOOK-2>
10: [485] handler frame for conditions SWANK::INVOKE-DEFAULT-DEBUGGER
11: [479] compiled tagbody frame for #(NIL)
12: <1/473> #<COMPILED-FUNCTION SWANK:SWANK-DEBUGGER-HOOK>[471] frame binding variables (~ = dynamically):  | ~ *DEBUGGER-HOOK* <--> #<COMPILED-FUNCTION SWANK:SWANK-DEBUGGER-HOOK>
13: <1/468> #<SYSTEM-FUNCTION INVOKE-DEBUGGER> 1[467] frame binding variables (~ = dynamically):  | ~ SYSTEM::*PRIN-STREAM* <--> #<UNBOUND>
14: [464] frame binding variables (~ = dynamically):  | ~ *PRINT-READABLY* <--> NIL
15: [461] frame binding variables (~ = dynamically):  | ~ *PRINT-ESCAPE* <--> T
16: <1/458> #<SYSTEM-FUNCTION ERROR>[457] frame binding variables (~ = dynamically):  | ~ SYSTEM::*ACTIVE-RESTARTS* <--> (#S(RESTART :NAME SWANK::RETRY :TEST #<COMPILED-FUNCTION SYSTEM::DEFAULT-RESTART..
17: [454] frame binding variables (~ = dynamically):  | ~ SYSTEM::*CONDITION-RESTARTS* <--> NIL
18: [450] compiled block frame for SYSTEM::CHECK-VALUE
19: <1/445> #<COMPILED-FUNCTION SYSTEM::CHECK-VALUE>- NIL ~

那么，到底发生了什么，我该如何解决它?

Answer 1

好，这是与调试器一起工作，然后进入正常模式(按ESC)

:

如果将光标放置在Backtrace:部分的编号行上并按Enter键(在Normal模式下)，然后显示帧局部变量:

如果您在"重启:"部分按下编号行Enter，则执行相应的重启操作。最常用的重启有自己的快捷键:，a选择中止，，q选择"退出"，选择"继续重启"。让我们选择[*ABORT]通过按a:

返回到SLIME的顶层

您可以通过sliv教程了解更多信息