Hey I've recently downloaded lldb and haven't been able to get it working properly. I'm compiling a c program with a segmentation fault and want to use lldb to help me solve the problem.
This is the error message I recieve:
charlielamb@Charlies-MacBook-Air jackCompiler % lldb compiled
(lldb) target create "compiled"
Current executable set to '/Users/charlielamb/Documents/Uni/cs/compliterDesignAndConstruction/comp/jackCompiler/compiled' (x86_64).
(lldb) run
Process 3378 launched: '/Users/charlielamb/Documents/Uni/cs/compliterDesignAndConstruction/comp/jackCompiler/compiled' (x86_64)
Process 3378 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x0)
frame #0: 0x00007ff80f9cc6b2 libsystem_platform.dylib`_platform_strlen + 18
libsystem_platform.dylib`:
-> 0x7ff80f9cc6b2 <+18>: pcmpeqb (%rdi), %xmm0
0x7ff80f9cc6b6 <+22>: pmovmskb %xmm0, %esi
0x7ff80f9cc6ba <+26>: andq $0xf, %rcx
0x7ff80f9cc6be <+30>: orq $-0x1, %rax
Target 0: (compiled) stopped.
I've looked around online and couldn't find anything that helps. Does anyone know how to fix this problem?
lldb's running fine, it's just telling you your program crashed while running strlen. EXC_BAD_ACCESS means you tried to read or write from invalid memory. The exception message also tells you what the address was:
EXC_BAD_ACCESS (code=1, address=0x0)
The code means it was a read access. The address you tried to read from was 0x0.
That looks a lot like your code passed a NULL pointer to strlen.