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Wean mtrace away from the malloc hooks and move them into the debug
DSO. Split the API away from the implementation so that we can add
the API to libc.so as well as libc_malloc_debug.so, with the libc
implementations being empty.
Update localplt data since memalign no longer has any callers after
this change.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
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Exporting functions and relying on symbol interposition from libc.so
makes the choice of implementation dependent on DT_NEEDED order, which
is not what some compiler drivers expect.
This commit replaces one magic mechanism (symbol interposition) with
another one (preprocessor-/compiler-based redirection). This makes
the hand-over from the minimal malloc to the full malloc more
explicit.
Removing the ABI symbols is backwards-compatible because libc.so is
always in scope, and the dynamic loader will find the malloc-related
symbols there since commit f0b2132b35248c1f4a80f62a2c38cddcc802aa8c
("ld.so: Support moving versioned symbols between sonames
[BZ #24741]").
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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The sole failure for ColdFire in the compilation part of the glibc
testsuite is the localplt test. This patch adds a localplt baseline
for ColdFire to eliminate that failure. The difference from the
existing m68k baseline is that no PLT entry for _Unwind_Find_FDE is
expected, because ColdFire does not set
libc_cv_gcc_unwind_find_fde=yes.
Tested with build-many-glibcs.py.
* sysdeps/unix/sysv/linux/m68k/localplt.data: Move to ....
* sysdeps/unix/sysv/linux/m68k/m680x0/localplt.data: ... here.
* sysdeps/unix/sysv/linux/m68k/coldfire/localplt.data: New file.
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