The problem is that clang-1000.11.45.2 distributed with Apple LLVM version 10.0.0 adds a new load command to o-mach executables named LC_BUILD_VERSION. $ otool -l test.o … Load command 1 cmd LC_BUILD_VERSION cmdsize 24 platform macos sdk n/a minos 10.14 ntools 0 … From the apple source: /* * The build_version_command contains the min OS version … Read more
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.
Install Homebrew first : /usr/bin/ruby -e “$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)” Then run this : brew install gdb
This is how I easily fixed the issue. [Update: based on feedback received and yet to be verified, it seems that this solution works with macOS Sierra 10.12 but not with macOS Sierra 10.12.2] See video instructions here Quit gdb Using your text editor e.g. Sublime Text, save a file called .gdbinit in your user … Read more
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
(gdb) rbreak file:. from http://sourceware.org/gdb/download/onlinedocs/gdb/Set-Breaks.html#Set-Breaks
help macro You must compile with the -g3 flag for it to work and start your program before the macros are loaded. In your case: info macro CONST or macro expand CONST More info: http://sourceware.org/gdb/current/onlinedocs/gdb/Macros.html
EDIT The documentation suggests that catch throw <exceptname> can be used to break whenever an exception of type <exceptname> is thrown; however, that doesn’t seem to work in practice. (gdb) help catch Set catchpoints to catch events. Raised signals may be caught: catch signal – all signals catch signal <signame> – a particular signal Raised … Read more
.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
You can do this: gdb –args path/to/executable -every -arg you can=think < of The magic bit being –args. Just type run in the gdb command console to start debugging.