debugging

问题 When I run nodemon dist/server/app.js it works on default port 3000 and I'm able to reach my API. But if I run nodemon --inspect-brk=localhost:3000 dist/server/app.js , I got error saying "WebSockets request was expected". What's wrong? 回答1: You can't run your web server and the debugger on the same port. They are each separate servers (the debugger is a server built into the node.js runtime). So, you can either remove the port and host designation from the --inspect-brk option and just let

问题 Hi I just discovered a quite weird behaviour of the debugger when declaring a simple two-dimensional array. It looks like it can't open a file cygwin.S in the library. Cannot open file: ../../../../../src/gcc-4.8.1/libgcc/config/i386/cygwin.S At ../../../../../src/gcc-4.8.1/libgcc/config/i386/cygwin.S:169 An execution without debugging works fine. There is an example of the code: #include <stdio.h> #include <stdlib.h> int main() { const int strNumTries = 15; const int strLength = 98; char

问题 I want to define some auxiliary marcos in GDB for convenience, one of them is the offsetof() macro. I tried define offsetof if $argc == 2 (int)(&((($arg0 *)0)->$arg1)) end end It doesn't work because: A type such as struct node will be splitted into Struct and node , so $arg0 = Struct , $arg1 = node . I am not sure if gdb's command can return a value. Can anyone give me a hand? 回答1: Rather than define offsetof as a command, I think it's better to define it as a function. That way you can use

问题 So I have some malfuctioning code to debug where SOMEthing throws an NPE and I'd like to step through some generated methods in order to try and find out why. Except stepping blindly is not really useful. Thread-4[1] list Source file not found: Foo.java Thread-4[1] locals Local variable information not available. Compile with -g to generate variable information The code was generated, so of course there is no .java file available for JDB. And since I don't compile it with javac, there's no

问题 I call a method in Visual Studio and attempt to debug it by going over the call stack. Some of the rows in it are marked "External code". What exactly does this mean? Methods from a .dll have been executed? Stupid question; but need a definitive answer. 回答1: These are the lines where symbol information is not currently available for Visual Studio Debugger . In other words Debugger is not able to retrieve code from the line executed. I wrote currently because the symbol information can be

问题 How can I debug Rust application step by step interactively like I'm able to do with "pry" in Ruby? I want to be able to see and preferably change the variables in real time when I reach a break point. Is there any production ready finished project? 回答1: I find a good level of usability with VS Code and the CodeLLDB extension: Install VS Code Search and install the extension Rust or the newer rust-analyzer from within VS Code Check requisites and setup CodeLLDB for your platform Search and

问题 I'm using Xcode on OSX to develop command line C applications. I would also like to use Instruments to profile and find memory leaks. However, I couldn't find a way to display the console when launching the application from within Instruments. I'm also unable to attach to a running command line process (it exits with an error): Here's an example code: #include <stdio.h> #include <signal.h> #include <stdlib.h> #include <setjmp.h> static sigjmp_buf jmpbuf; void handler(int sig) { char c[BUFSIZ]

问题 I have been trying to code a small 2D game using python. checkp_list[0]=head_pos pressed_key= pygame.key.get_pressed() if pressed_key[pygame.K_ESCAPE]: running=False if pressed_key[pygame.K_UP]: if dir_ not in ["up", "down"]: dir_= "up" checkp_no= checkp_no+1 #head_pos_next=head_move(head_pos, dir_) checkp_list.insert(checkp_no,head_pos) log_file_obj.write("chekp_list {}, checkp_no {} after append dir {}\n".format(checkp_list,checkp_no,dir_)) if pressed_key[pygame.K_DOWN]: if dir_ not in ["up

来源： https://stackoverflow.com/questions/64418624/why-do-i-get-crtisvalidheappointerblock-and-or-is-block-type-validheader-b

来源： https://stackoverflow.com/questions/47093252/xcode-9-stop-debugging-and-running-application-and-giving-error-the-lldb-rpc-se