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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug sanitizer/98920] [10/11 Regression] uses regexec without
 support for REG_STARTEND with -fsanitize=address
Date: Thu, 04 Feb 2021 11:08:22 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98920

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |fweimer at redhat dot com

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I'm not sure if your patch is correct.
glibc has the system of earliest symbol versions, and so on certain
architectures
GLIBC_2.3.4 symver will not appear at all.
Given:
./sysdeps/mach/hurd/shlib-versions:DEFAULT                      GLIBC_2.2.6
./sysdeps/unix/sysv/linux/csky/shlib-versions:DEFAULT=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20
GLIBC_2.29
./sysdeps/unix/sysv/linux/microblaze/shlib-versions:DEFAULT=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
GLIBC_2.18
./sysdeps/unix/sysv/linux/arc/shlib-versions:DEFAULT                 GLIBC_=
2.32
./sysdeps/unix/sysv/linux/m68k/coldfire/shlib-versions:DEFAULT=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20
GLIBC_2.4
./sysdeps/unix/sysv/linux/arm/shlib-versions:DEFAULT=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20
GLIBC_2.4
./sysdeps/unix/sysv/linux/s390/s390-64/shlib-versions:DEFAULT=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20
GLIBC_2.2
./sysdeps/unix/sysv/linux/riscv/shlib-versions:DEFAULT          GLIBC_2.27
./sysdeps/unix/sysv/linux/riscv/shlib-versions:DEFAULT          GLIBC_2.27
./sysdeps/unix/sysv/linux/riscv/shlib-versions:DEFAULT          GLIBC_2.33
./sysdeps/unix/sysv/linux/riscv/shlib-versions:DEFAULT          GLIBC_2.33
./sysdeps/unix/sysv/linux/x86_64/x32/shlib-versions:# DEFAULT=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20
Earliest symbol set
./sysdeps/unix/sysv/linux/x86_64/x32/shlib-versions:DEFAULT=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
GLIBC_2.16
./sysdeps/unix/sysv/linux/x86_64/64/shlib-versions:# DEFAULT=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20
Earliest symbol set
./sysdeps/unix/sysv/linux/x86_64/64/shlib-versions:DEFAULT=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
GLIBC_2.2.5
./sysdeps/unix/sysv/linux/powerpc/powerpc64/shlib-versions:DEFAULT=20=20=20=
=20=20=20=20=20=20=20=20=20=20
        GLIBC_2.17
./sysdeps/unix/sysv/linux/powerpc/powerpc64/shlib-versions:DEFAULT=20=20=20=
=20=20=20=20=20=20=20=20=20=20
        GLIBC_2.3
./sysdeps/unix/sysv/linux/nios2/shlib-versions:DEFAULT=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20
GLIBC_2.21
./sysdeps/unix/sysv/linux/aarch64/shlib-versions:DEFAULT=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
GLIBC_2.17
and the limited list of arches supported by libsanitizer, I'd say at least
riscv*, powerpc64le and aarch64 (and maybe x86-64 -mx32 if supported) are
affected.=