brew's default gdb works on macOS 26 #65
Description
I was having problems getting gdb-multiarch to install on the latest macOS (26) so I decided to try the vanilla gdb:
`
gdb ../../../target/thumbv7em-none-eabihf/debug/examples/init
GNU gdb (GDB) 16.3
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There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "--host=aarch64-apple-darwin25.0.0 --target=x86_64-apple-darwin20".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
https://www.gnu.org/software/gdb/bugs/.
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http://www.gnu.org/software/gdb/documentation/.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Redefine command "allreadq"? (y or n) [answered Y; input not from terminal]
Redefine command "allasoc"? (y or n) [answered Y; input not from terminal]
Reading symbols from ../../../target/thumbv7em-none-eabihf/debug/examples/init...
(gdb) target remote :1337
Remote debugging using :1337
init::__cortex_m_rt_main_trampoline ()
at mdbook/src/05-meet-your-software/examples/init.rs:10
10 #[entry]
(gdb) b main
Breakpoint 1 at 0x15c: file mdbook/src/05-meet-your-software/examples/init.rs, line 10.
┌─mdbook/src/05-meet-your-software/examples/init.rs────────────────────────────┐
│ 5 use cortex_m::asm; │
│ 6 use cortex_m_rt::entry; │
│ 7 use microbit as _; │
│ 8 use panic_halt as _; │
│ 9 │
│B+ 10 #[entry] │
│ > 11 fn main() -> ! { │
│ 12 #[allow(clippy::needless_late_init)] │
│ 13 let _y; │
│ 14 let x = 42; │
│ 15 _y = x; │
│ 16 │
│ 17 // infinite loop; just so we don't leave this stack frame │
│ 18 loop { │
└──────────────────────────────────────────────────────────────────────────────┘
remote Thread 1.1 (src) In: init::__cortex_m_rt_main L11 PC: 0x160
Note: automatically using hardware breakpoints for read-only addresses.
(gdb) monitor reset halt
Resetting and halting target
Target halted
(gdb) c
Continuing.
Program received signal SIGINT, Interrupt.
cortex_m_rt::DefaultPreInit () at src/lib.rs:1117
1117 pub unsafe extern "C" fn DefaultPreInit() {}
(gdb) c
Continuing.
Breakpoint 1, init::__cortex_m_rt_main_trampoline ()
at mdbook/src/05-meet-your-software/examples/init.rs:10
10 #[entry]
(gdb) c
Continuing.
Program received signal SIGINT, Interrupt.
init::__cortex_m_rt_main ()
at mdbook/src/05-meet-your-software/examples/init.rs:11
11 fn main() -> ! {
(gdb) layout src
Detaching from program: /Volumes/Repos/Rust/discovery-mb2/target/thumbv7em-none-eabihf/debug/examples/init, process 1
Ending remote debugging.
[Inferior 1 (process 1) detached]
`
I do have this installed: arm-none-eabi-gdb so maybe that's helping? But I think it's just vanilla gdb from homebrew "just works.