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charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-ID: X-Proofpoint-GUID: ixwm3Pb-tIT0W18HeOmVHCsZsTT4IhjE X-Proofpoint-ORIG-GUID: ixwm3Pb-tIT0W18HeOmVHCsZsTT4IhjE X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1093,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-03-21_05,2025-03-21_01,2024-11-22_01 > On Mar 21, 2025, at 8:16=E2=80=AFAM, Michael Kelley wrote: >=20 > >=20 > From: Ingo Molnar Sent: Friday, March 21, 2025 12:38 AM >>=20 >> * Michael Kelley wrote: >>=20 >>>> What are your thoughts as maintainers of lib/zstd? >>>=20 >>> FYI, the same segfault occurs with gcc 10.5. The problem is fixed >>> in gcc 11.4. >>=20 >> So the patch below would work this around on GCC9 and GCC10? >=20 > I've confirmed that the patch gives a clean compile with gcc 9.4. >=20 > Note that I confirmed yesterday that the gcc problem is fixed with > 11.4. I don't know about earlier gcc 11 minor versions. Lemme see > if I can get the original gcc 11 release and try that to confirm that > your patch has the right version cutoff. Thanks for the report & proposed fix! If you can test gcc-11.0, that would be great, otherwise we could just cut off at (__GNUC__ >=3D 12 || (__GNUC__ =3D=3D 11 && __GNUC_MINOR__ >=3D = 4)) I am preparing the zstd-v1.5.7 update, and I will pull a patch that fixes t= his into my tree. If someone wants to submit a patch I'll pull that, otherwise I can submit o= ne later today. Best, Nick Terrell > Michael =20 >=20 >>=20 >> Thanks, >>=20 >> Ingo >>=20 >> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D> >> lib/zstd/common/portability_macros.h | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >>=20 >> diff --git a/lib/zstd/common/portability_macros.h b/lib/zstd/common/port= ability_macros.h >> index 0e3b2c0a527d..0dde8bf56595 100644 >> --- a/lib/zstd/common/portability_macros.h >> +++ b/lib/zstd/common/portability_macros.h >> @@ -55,7 +55,7 @@ >> #ifndef DYNAMIC_BMI2 >> #if ((defined(__clang__) && __has_attribute(__target__)) \ >> || (defined(__GNUC__) \ >> - && (__GNUC__ >=3D 5 || (__GNUC__ =3D=3D 4 && __GNUC_MINOR__ >= =3D 8)))) \ >> + && (__GNUC__ >=3D 11))) \ >> && (defined(__x86_64__) || defined(_M_X64)) \ >> && !defined(__BMI2__) >> # define DYNAMIC_BMI2 1 >=20