[lldb-dev] here need your help

[Greg Clayton]

You did everything correctly. My guess is you didn't supply -O0 on your compile line and the compiler optimized your code. When the compiler optimizes your code, the line numbers and debug info are not very useful due the the optimizations.

Try compiling with:

% clang -g -O0 -o helloworld helloworld.c

And try again.

Greg

On Dec 24, 2013, at 11:45 PM, liu chao jun <amiko212 at 126.com> wrote:

>  hi all ,
>      This is amiko who is a new lldb user ,There is same questions  need your help 
> 1, Can lldb  debug C/C++ project .ext file directly  like gdb or not ? 
> 2 ,Here is a simple c project named helloword  the detail source please follow below:
> 
> // helloworld.c \
> 1 #include <stdio.h>
> 2 int main()
> 3 {
> 4     int i  ;
> 5     for(i=0 ;i<2;i++)
> 6    {
> 7       printf ("hello world\n");
> 8    }
> 9      return 0 ; 
> 10 }
> my step is 
> 1 clang -g -o helloworld helloworld.c
> 2 $lldb helloworld
> 3<lldb> b hellowold.c:7
> 4 run 
> I think it will pause in line 7 .however it seems fail ,and print two hello world , In other word setting breakpoint operation does not useful . Is any error or fault for my operations ,Thank you very much ,And looking forward to your reply ,Thanks again .  
> 
> 
> 
> 
> 
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