[PATCH] malloc: Fix malloc debug for 2.35 onwards

[Stafford Horne]

On Tue, Nov 16, 2021 at 04:17:10AM +0530, Siddhesh Poyarekar wrote:
> On 11/16/21 02:37, Stafford Horne wrote:
> > I am not sure, after my patch the SHLIB_COMPAT usage is just there for compat
> > symbols.  As you mention using SHLIB_COMPAT to ensure libc_malloc_debug.so and
> > libc.so have the same version seems strange, I would think that would be
> > controlled by shlib-version or done out of the box.
> 
> Right, so it mostly works, i.e. you have symbols with version names:
> 
> ...
> > 00009bb4 g    DF .text	00000030  GLIBC_2.35  memalign
> > 0000a5a8 g    DF .text	00000138  GLIBC_2.35  mallinfo
> > 000091a0 g    DF .text	00000180  GLIBC_2.35  malloc
> > 0000a2ac g    DF .text	000000f8  GLIBC_2.35  mallopt
> ...
> 
> but they're default versions, which is not desirable since we don't want
> this library to be linkable.  So you will need a new macro that always
> creates the non-default symbol at the version that it was introduced.

I think I get what you mean.  Is this something you are planning to sort out?
As is without this patch the mem tests are failing on my port, and any future
ports.  For existing ports it is working because of the HACK as you say.

-Stafford