[PATCH] malloc: Fix malloc debug for 2.35 onwards

[Siddhesh Poyarekar]

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.

Siddhesh