Darling: xcode 9 segfault

[PhilipDeegan]

I've tried copying XCode 9 (.3?) from a mac

the simple example compiles but segfaults at run time

[ahyattdev]

Could you provide more details? What is the simple example that you are compiling?

So you compile it with clang from Xcode 9 and it doesn't run?

[PhilipDeegan]

sorry it compiles but it does not link

the example is a simple hello world

void main() { puts("Hello world"); }

[PhilipDeegan]

Trying through gdb shows

assertion failure on line 243 of "/path/to/git/darling/src/external/gdb/src/gdb/macosx/macosx-nat-inferior-util.c" in function "kern_return_t macosx_inferior_resume_mach(macosx_inferior_status *, int)": macosx_task_valid (s->task)

(gdb) bt
Error calling thread_get_state for GP registers for thread 0x0
Error calling thread_get_state for GP registers for thread 0x0
error on line 169 of "/path/to/darling/src/external/gdb/src/gdb/macosx/i386-macosx-nat-exec.c" in function "void fetch_inferior_registers(int)": [UNKNOWN] (0x10000003)

[bugaevc]

The GDB we ship doesn't really work anymore.

Our debugging story is currently about enabling LLDB to work under Darling (see #304) & it's almost ready, but not quite yet. Until then, I just use host's native GDB, which means no debugging symbols.

[PhilipDeegan]

Thanks for the response, I'll give it another go on a separate machine to see if I get the same thing - happy to be involved as I really would like to avoid needing a mac :)

[PhilipDeegan]

Seems ok with Ubuntu and master now

[bugaevc]

It definitely works for me (on multiple distros) on master, so let's consider it fixed.