如何知道Linux中的程序崩溃的地址？

Question

I have a program running in Linux and It's been mysteriously crashing. I already know one way to know where it crashes at is to use GDB. But I don't want to attach to it every time I restart it (do this a lot since I'm testing it). Is there an alternative way to do this?

Answer 1

First use ulimit -c unlimited to allow crashed programs to write core dumps.

After the program crashes, you'll find a core dump file, called core , or perhaps core.<pid> if your program is multithreaded.

You can load this into GDB to examine the state at the point of the crash with gdb program core .

Answer 2

First do a ulimit -c unlimited , so the program will leave a core dump. Then, when it crashes, invoke gdb with the core dump, to read the state of the program at the moment of the crash.

Answer 3

You can configure your OS to dump a core file any time a program crashes. You can then examine the core to determine the crash location.

Answer 4

-> compile the code with gdb flags enabled.

gcc -o < binary name > -g < file.c > (assuming it is ac/c++ program)

-> run the executable withing gdb. gdb < binary name >

after this there are ways to find the crash location: 1. stepwise execution. 2. run the code, it crashes (as expected), type "where" within gdb (without quotes) it gives the backtrace. from that, you can find out the address.

here is a nice quick guide to gdb : http://www.cs.cmu.edu/~gilpin/tutorial/