[glibc] linux: Fix fstat64 on alpha and sparc64

[glibc] linux: Fix fstat64 on alpha and sparc64

[Adhemerval Zanella]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=061eaf024470627d835d347860d5f8c59b454d08

commit 061eaf024470627d835d347860d5f8c59b454d08
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Tue Jan 2 11:31:52 2024 -0300

    linux: Fix fstat64 on alpha and sparc64
    
    The 551101e8240b7514fc646d1722f8b79c90362b8f change is incorrect for
    alpha and sparc, since __NR_stat is defined by both kABI.  Use
    __NR_newfstat to check whether to fallback to __NR_fstat64 (similar
    to what fstatat64 does).
    
    Checked on sparc64-linux-gnu.
    Reviewed-by: Carlos O'Donell <carlos@redhat.com>

Diff:
---
 sysdeps/unix/sysv/linux/fstat64.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/sysdeps/unix/sysv/linux/fstat64.c b/sysdeps/unix/sysv/linux/fstat64.c
index f631ab22f4..cc9f695df9 100644
--- a/sysdeps/unix/sysv/linux/fstat64.c
+++ b/sysdeps/unix/sysv/linux/fstat64.c
@@ -30,8 +30,11 @@ __fstat64_time64 (int fd, struct __stat64_t64 *buf)
 {
 #if !FSTATAT_USE_STATX
 # if XSTAT_IS_XSTAT64
-#  ifdef __NR_fstat
-  /* 64-bit kABI, e.g. aarch64, powerpc64*, s390x, riscv64, and
+  /* The __NR_stat macro is defined for all ABIs that also define 
+     XSTAT_IS_STAT64, so to correctly identify alpha and sparc check
+     __NR_newfstatat (similar to what fstatat64 does).  */
+#  ifdef __NR_newfstatat
+  /* 64-bit kABI, e.g. aarch64, ia64, powerpc64*, s390x, riscv64, and
      x86_64.  */
   return INLINE_SYSCALL_CALL (fstat, fd, buf);
 #  elif defined __NR_fstat64