Sanity check with CLI Before you do anything, make sure you: cross compile the application correctly and that it runs. You don’t necessarily need to do this using Eclipse. get GDB remote debugging working properly from the command line This answer supposes that you can do on the development board: sudo apt-get install gdbserver gdbserver … Read more
As far back as the late ’90s, broken command line redirection was a known and assumed limitation. My suspicion is that it remains that way, since the mingw32 port of gdb still gleefully passes on verbatim all run arguments (including redirects) to the debugee. Several possible workarounds: if you have the option to alter the … Read more
You need to turn off auto-solib-add. From a normal gdb prompt you would type: (gdb) set auto-solib-add off In Qt Creator, under Options->Debugger->Gdb you can specify a Gdb startup script. Create a file with the “set auto-solib-add off” command in it and then set your Gdb startup script to that file.
Check out Tom Tromey’s pretty printing tutorials part 1 and part 2. There is also the libstdc++-v6 pretty printer implementation to look at, which is what I used myself as a template when I started out. A somewhat simpler example (as of this writing) is the Boost pretty printer by Rüdiger Sonderfeld.
The child process inherits signal handlers from the parent, but not the pending signal. After forking try installing the signal handler for SIGTRAP at a place in code where the child process executes after forking. If you don’t handle SIGTRAP, the default action is that the child is terminated. If you want to debug the … Read more
try break *0x0000000000400448
.gdbinit You can tweak your ~/.gdbinit to have colors. You can use mammon’s .gdbinit which is available here: https://github.com/gdbinit/gdbinit You can tweak it as much as you want too. I found this thanks to this SO answer. Here’s the kind of output that you can obtain: A GitHub repository is also available: https://github.com/gdbinit/Gdbinit On a … Read more
It looks like there is a nice workaround for this implemented in recent versions of glibc: a “tunables” feature that guides selection of optimized string functions. You can find a general overview of this feature here and the relevant code inside glibc in ifunc-impl-list.c. Here’s how I figured it out. First, I took the address … Read more
From man gcc -fno-builtin -fno-builtin-function Don’t recognize built-in functions that do not begin with __builtin_ as prefix. GCC normally generates special code to handle certain built-in functions more efficiently; for instance, calls to “alloca” may become single instructions which adjust the stack directly, and calls to “memcpy” may become inline copy loops. The resulting code … Read more
Is there any way to disable this gdb’s feature? Yes, you can set disable-randomization off before running the program. See this part of gdb documentation: set disable-randomization off Leave the behavior of the started executable unchanged. Some bugs rear their ugly heads only when the program is loaded at certain addresses. If your bug disappears … Read more