Re: [Valgrind-users] Valgrind ignores program if linked with -static flag

[Tom H. <th...@cy...>]

In message <Pin...@gr...>
        Nicholas Nethercote <nj...@ca...> wrote:

> I then linked them with the object file of a test program, null.o:
>
>   ld -Lmemcheck -lmemcheck -Lcoregrind -lvalgrind null.o
>
> ld warned:
>
>   ld: warning: cannot find entry symbol _start; defaulting to 08048074

You linked using the linker itself without linking in the C library
or the run time startup code, which is where _start will live. That
will then call main after firing up the C library.

Unless you've got a very good reason to do otherwise you're usually
better off linking with cc as that will automatically the C library
and run time startup code to the link. Try this:

 cc -Lmemcheck -lmemcheck -Lcoregrind -lvalgrind null.o

If you add -v to that then you'll see all the extra things that cc
throws into the link which you were missing...

Tom

-- 
Tom Hughes (th...@cy...)
Software Engineer, Cyberscience Corporation
http://www.cyberscience.com/