Consider the following code: #include <stdio.h> #include <ctype.h> char* Mstrupr(char* szCad); int main() { char szCadena[] = "This string should print well."; printf("%s\n", Mstrupr(szCadena)); printf("%s\n", Mstrupr("This string should fail.")); return 0; } char* Mstrupr(char* szCad) { int i; for (i=0; szC...
Hi, what is meaning * Terminating app due to uncaught exception 'NSRangeException', reason: '* -[NSMutableArray objectAtIndex:]: index 1 beyond bounds [0 .. 0]' so that i can solve my problem thanks ...
How to break with GDB at object destruction if there is no destructor? ...
Hi Everyone, I am writing a program that runs some unit tests on code that that been written by my colleagues. I am using the Google C++ testing framework. I run a function that spawns 3 threads, and then runs for 30 seconds. After it runs, the program exits with status 0. This is not the expected behavior, obviously. I know it doesn't ...
How do you call operator<<(std::ostream &os, const ClassX &x) from inside gdb ? In other words, how do you print an object in gdb ? call std::cout<<x or call operator<<(std::cout, x) don't seems to work for me! Any ideas? ...
There is one very useful gdb "script" called poor man's profiler. It calls this command: gdb -ex "set pagination 0" -ex "thread apply all bt" --batch -p $pid It works well for most linux processes, but don't work for nginx web server. Normal output: # gdb -ex "set pagination 0" -ex "thread apply all bt" -batch -p 5286 Using host lib...
I've got a SIGSEGV I'm trying to track down in my code, but I'm getting strange backtraces like this out of GDB: #1 0x00407d15 in print_banner (msg=0x2e2e2e2e <Address 0x2e2e2e2e out of bounds>) at ../include/test_util.hh:20 #2 0x2e2e2e2e in ?? () #3 0x2e2e2e2e in ?? () #4 0x2e2e2e2e in ?? () #5 0x2e2e2e2e in ?? () #6 0x2e2e2e...
Hi, I'm playing with gdb within xcode debugging an iphone app. Supposedly, I should be able to use the following command: info malloc <0xaddress> see http://www.friday.com/bbum/2010/01/10/using-malloc-to-debug-memory-misuse-in-cocoa/ and http://stackoverflow.com/questions/2910861/strange-gdb-error-unable-to-trace/2911197#2911197 I...
I have big process running. It spawns two threads. I want to debug those two threads separately. But there is only one gdb prompt. How to do this? Means I want to parallely see the execution of the threads. ...
Hi, I have a timing bug in my application which only occurs when I use valgrind, because valgrind slows down the process so much. (it's actually a boost::weak_ptr-exception that I cannot localize) Now I wonder how to reproduce the bug with gdb. I don't see a way to combine gdb + valgrind. Thanks. ...
I love using GDB withing emacs. And I most like the configuration that I get with "gdb-many-windows", as seen here: gdb-many-windows That said, it's not perfect. I'd like to add a frame for showing the currently running threads. Does anyone know if it's possible to customize the configuration that "gdb-many-windows" gives you? Or, if I...
When I use set logging on in gdb, the output to the log file has a different format than what I see on the terminal screen. The logfile is not very readable. How can I get the log file in a readable format? Output to screen is fine: (gdb) p foo $1 = { static npos = 18446744073709551615, _M_dataplus = { <std::allocator<char>> = ...
Dear all! Is it possible to find out the stack size (= number of frames in the stack) in a gdb script and use it as a condition in a command list? (By gdb script I mean a list of commands that can be given to gdb as "gdb --command='gdb_script' executable") And is it possible to have conditions within command lists? I'm looking for some...
I'm using Qt Creator on Ubuntu to develop C. Whenever I run with the debugger, I get the message warning: GDB: Failed to set controlling terminal: Invalid argument. This happens even with a hello world program. How can I solve this? ...
Hi all is there an easy way to visualize non linear(non contiguous) data structures like linked list or binary trees of a program in gnu debugger(gdb).... to visualize an array of structures we can simply use.... print *array@len if more indirection is needed we can also use print **array@len but above works for only linear data ...
Hello. Could anyone please give me a quick overview/point me to documentation of a way to inspect the stack (and heap?) of a C program? I thought this should be done with GDB, but if there are other more straighforward alternatives, then that should be fine as well. Thanks. ...
I have device which is running linux with svga library for user interface. I tried to debug it by using GDB, but I got black screen when I initiated graphic by launching svga library. Any body knows how I can make it work? Thanks. ...
suppose the following is the asm code 8048deb: e8 41 05 00 00 call 8049331 <explode_bomb> 8048df0: 03 73 f4 add -0xc(%ebx),%esi 8048df3: 83 c3 04 add $0x4,%ebx 8048df6: 8d 45 f8 lea -0x8(%ebp),%eax 8048df9: 39 c3 cmp ...
Guys, how can i access value of 0x14(%edx)? Thank you ...
Hello there - I am trying to understand how to accomplish some basic debugging stuff with gdb I want to check the length of this control (UILabel) if I type the following in the console I get nothing, what's the proper way to do it? (gdb) po self.mylabel.frame.size.width There is no member named frame. or if I try without self: (gdb...