glibc/sysdeps/unix/sysv/linux/x86_64/64
Florian Weimer 41d6f74e6c nptl: Remove vfork IFUNC-based forwarder from libpthread [BZ #20188]
With commit f0b2132b35 ("ld.so:
Support moving versioned symbols between sonames [BZ #24741]"), the
dynamic linker will find the definition of vfork in libc and binds
a vfork reference to that symbol, even if the soname in the version
reference says that the symbol should be located in libpthread.

As a result, the forwarder (whether it's IFUNC-based or a duplicate
of the libc implementation) is no longer necessary.

On older architectures, a placeholder symbol is required, to make sure
that the GLIBC_2.1.2 symbol version does not go away, or is turned in
to a weak symbol definition by the link editor.  (The symbol version
needs to preserved so that the symbol coverage check in
elf/dl-version.c does not fail for old binaries.)

mips32 is an outlier: It defined __vfork@@GLIBC_2.2, but the
baseline is GLIBC_2.0.  Since there are other @@GLIBC_2.2 symbols,
the placeholder symbol is not needed there.
2019-07-02 16:51:13 +02:00
..
Makefile
c++-types.data
configure
configure.ac
dl-librecon.h
jmp_buf-macros.h
ld.abilist
libBrokenLocale.abilist
libanl.abilist
libc.abilist Linux: Add getdents64 system call 2019-06-07 09:27:01 +02:00
libcrypt.abilist
libdl.abilist
libm.abilist
libnsl.abilist
libpthread.abilist nptl: Remove vfork IFUNC-based forwarder from libpthread [BZ #20188] 2019-07-02 16:51:13 +02:00
libresolv.abilist
librt.abilist
libthread_db.abilist
libutil.abilist
mmap_internal.h
shlib-versions