[lldb-dev] Weird issues with LLDB ToT

[Jim Ingham]

I can't reproduce any of these issues with the current TOT lldb.  Weird...

Jim

On Nov 4, 2011, at 4:36 AM, Enrico Granata wrote:

> Dear all,
> I am not sure if this is reproducible, but I am experiencing some strange behavior while using LLDB ToT.
> 1) The debugger does not automatically show the current snippet of source code when stopping at a breakpoint, I need to manually type "frame select 0" to get the code to appear, as in:
> (lldb) next
> (lldb) step
> (lldb) frame select 0
> frame #0: 0x0000000100000ec9 programma`foo(int&) + 25 at programma.cpp:4
>    1   	int foo(int& x)
>    2   	{
>    3   		x = x + 1;
> -> 4   		return (x-1);
>    5   	}
>    6   	int main()
>    7   	{
> (lldb) next
> (lldb) frame select 0
> frame #0: 0x0000000100000f0c programma`main + 44 at programma.cpp:10
>    7   	{
>    8   		int j = 0;
>    9   		while (j < 1000)
> -> 10  			foo(j);
>    11  		return 1;
>    12  	}
> (lldb) 
> 
> 2) Every time I try to quit LLDB, it crashes. I have attached a log of the crash. It looks like that, when calling SBDebugger::Destroy (m_debugger); in Driver::MainLoop(), the SharedPtr to the Debugger has already been reset to NULL which segfaults LLDB, however some of the debug information is missing and setting a watchpoint on the SP does not show any spurious writes.
> 3) The command "command script" and subcommands appear to have not been compiled in (however, other Python related commands are available)
> 
> I am not sure how reproducible this is, however I have tried a few times to download LLDB source code from scratch, but nothing changes. The most recent version that I am able to use successfully is r143676 + the fixes in ClangUserExpression.h from r143678.
> 
> Sincerely,
> - Enrico Granata
> <lldb.crash>
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