debugging

问题 Having this: #include <stdio.h> #include <stdlib.h> #include <ctype.h> char *up(char *); int main() { char initstr[20]; printf("enter string\n"); fgets(initstr, 20, stdin); char *str = up(initstr); printf("%s\n", str); } char *up(char *in) { char *ret; for (ret = in; *in != '\n'; *(ret++) = toupper(*(in++)) ); return ret; } Run it as: $./a.out enter string abc #only new line from `printf("%s\n",str);` From debugger Hardware watchpoint 3: in Old value = 0x7fffffffdc20 "abc\n" New value =

问题 Having this: #include <stdio.h> #include <stdlib.h> #include <ctype.h> char *up(char *); int main() { char initstr[20]; printf("enter string\n"); fgets(initstr, 20, stdin); char *str = up(initstr); printf("%s\n", str); } char *up(char *in) { char *ret; for (ret = in; *in != '\n'; *(ret++) = toupper(*(in++)) ); return ret; } Run it as: $./a.out enter string abc #only new line from `printf("%s\n",str);` From debugger Hardware watchpoint 3: in Old value = 0x7fffffffdc20 "abc\n" New value =

问题 I've just setup VSCode to work from home with my remote SSH that runs Gentoo x64 . Everything works fine apart from the GCC debugger which we usually use. It throws me the error in the title. Here's my launch.json : { "version": "0.2.0", "configurations": [ { "name": "gcc - Build and debug active file", "type": "cppdbg", "request": "launch", "program": "${fileDirname}/${fileBasenameNoExtension}", "args": [], "stopAtEntry": false, "cwd": "${workspaceFolder}", "environment": [],

问题 I've just setup VSCode to work from home with my remote SSH that runs Gentoo x64 . Everything works fine apart from the GCC debugger which we usually use. It throws me the error in the title. Here's my launch.json : { "version": "0.2.0", "configurations": [ { "name": "gcc - Build and debug active file", "type": "cppdbg", "request": "launch", "program": "${fileDirname}/${fileBasenameNoExtension}", "args": [], "stopAtEntry": false, "cwd": "${workspaceFolder}", "environment": [],

问题 I have a crash dump (minidump, mdmp format) for an executable (native x86 code) compiled on a different computer. I have the pdb + exe corresponding to the crash dump, they are located next to the crashdump, and debugger recognizes them correctly. The pdb references sources on a path which is not available on my computers (say E:\Project ). When I first opened the crash dump, the debugger has asked me for the source location. I pointed it to E:\B\Project on my computer, however once the

问题 I have a crash dump (minidump, mdmp format) for an executable (native x86 code) compiled on a different computer. I have the pdb + exe corresponding to the crash dump, they are located next to the crashdump, and debugger recognizes them correctly. The pdb references sources on a path which is not available on my computers (say E:\Project ). When I first opened the crash dump, the debugger has asked me for the source location. I pointed it to E:\B\Project on my computer, however once the

问题 So I'm trying to use the octave debugger to detect where division by zero happens. For that it seems logical to use "debug_on_warning ()". However I'm just not understanding how to use this function call. I mean should I place it in the script somewhere? but then how would the debugger start? an example would be great! 回答1: Take a look at the Debugging section of the Octave manual. For your case, you should place debug_on_warning (1) at the top of your script so it stops when the warning

问题 So I'm trying to use the octave debugger to detect where division by zero happens. For that it seems logical to use "debug_on_warning ()". However I'm just not understanding how to use this function call. I mean should I place it in the script somewhere? but then how would the debugger start? an example would be great! 回答1: Take a look at the Debugging section of the Octave manual. For your case, you should place debug_on_warning (1) at the top of your script so it stops when the warning

问题 I was training a code wars kata and the kata was: In a factory a printer prints labels for boxes. For one kind of boxes the printer has to use colors which, for the sake of simplicity, are named with letters from a to m. The colors used by the printer are recorded in a control string. For example a "good" control string would be aaabbbbhaijjjm meaning that the printer used three times color a, four times color b, one time color h then one time color a... Sometimes there are problems: lack of

问题 When I open a website that's not developed by me, it created a pop up of a DIV element. How can I find which code create that popup? I tried to set the breakpoint, but it only show the popup in the first time. Please note the key here are It's a website that's not developed by me The Popup is a DiV The popup only show the first time. If I refresh the page, it's gone. I'm not asking you to debug the site for me, I want to learn the ways to debug it by myself. What I'm after is programmatically