[PATCH v5 1/8] Move malloc hooks into a compat DSO

[Florian Weimer]

* Siddhesh Poyarekar:

> Remove all malloc hook uses from core malloc functions and move it
> into a new library libc_malloc_debug.so.  With this, the hooks now no
> longer have any effect on the core library.

There are still a few references to libmalloc_compathooks.

> diff --git a/elf/Makefile b/elf/Makefile
> index 698a6ab985..b432e78d39 100644
> --- a/elf/Makefile
> +++ b/elf/Makefile
> @@ -156,7 +156,7 @@ $(inst_auditdir)/sotruss-lib.so: $(objpfx)sotruss-lib.so $(+force)

> @@ -1561,7 +1558,8 @@ $(objpfx)tst-nodelete-dlclose.out: $(objpfx)tst-nodelete-dlclose-dso.so \
>  				   $(objpfx)tst-nodelete-dlclose-plugin.so
>  
>  tst-env-setuid-ENV = MALLOC_CHECK_=2 MALLOC_MMAP_THRESHOLD_=4096 \
> -		     LD_HWCAP_MASK=0x1
> +		     LD_HWCAP_MASK=0x1 \
> +		     LD_PRELOAD=$(common-objpfx)/malloc/libc_malloc_debug.so

I don't think this test needs the debugging allocator, it uses getenv to
see if the environment has been scrubbed.

In general, it looks like it's time to add support for mtrace tests to
the setsuite (that is, tests-mtrace like tests-time64).

Thanks,
Florian