But the kernel defines #define UIO_MAXIOV 1024 in include/uapi/linux/uio.h, and uses that definition. Reported first here: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org/thread/KURGEUYR4HLV43WHGZV236SYTJUW7YRU/ Introduced by: commit 37f802f86400684c8d13403958b2c598721d6360 Author: Zack Weinberg <zackw@panix.com> Date: Wed Mar 22 10:55:38 2017 -0400 Remove __need_IOV_MAX and __need_FOPEN_MAX. It looks like the fix is to include <sys/uio.h> in sysdeps/posix/sysconf.c; previously UIO_MAXIOV was supplied (indirectly) through <bits/stdio_lim.h>.
This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "GNU C Library master sources". The branch, master has been updated via 63b4baa44e8d22501c433c4093aa3310f91b6aa2 (commit) from 95ccb619f553c130dde7b51098d69132547f8a90 (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=63b4baa44e8d22501c433c4093aa3310f91b6aa2 commit 63b4baa44e8d22501c433c4093aa3310f91b6aa2 Author: Florian Weimer <fweimer@redhat.com> Date: Fri Oct 20 04:10:15 2017 +0200 sysconf: Fix missing definition of UIO_MAXIOV on Linux [BZ #22321] After commit 37f802f86400684c8d13403958b2c598721d6360 (Remove __need_IOV_MAX and __need_FOPEN_MAX), UIO_MAXIOV is no longer supplied (indirectly) through <bits/stdio_lim.h>, so sysdeps/posix/sysconf.c no longer sees the definition. ----------------------------------------------------------------------- Summary of changes: ChangeLog | 10 +++++++++ sysdeps/posix/sysconf.c | 1 + sysdeps/unix/sysv/linux/Makefile | 5 +++- .../unix/sysv/linux/tst-sysconf-iov_max-uapi.c | 13 +++++------ .../unix/sysv/linux/tst-sysconf-iov_max.c | 21 ++++++++++++------- 5 files changed, 34 insertions(+), 16 deletions(-) copy support/xdup2.c => sysdeps/unix/sysv/linux/tst-sysconf-iov_max-uapi.c (78%) copy math/test-finite-macros.c => sysdeps/unix/sysv/linux/tst-sysconf-iov_max.c (60%)
Fixed in 2.27. Will backport to 2.26.
This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "GNU C Library master sources". The branch, release/2.26/master has been updated via 2e78ea7a207e49a47a3448fbbc387d606141ec9d (commit) from 05155f0772a4befcc10da16ab64060ae7836ff7c (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2e78ea7a207e49a47a3448fbbc387d606141ec9d commit 2e78ea7a207e49a47a3448fbbc387d606141ec9d Author: Florian Weimer <fweimer@redhat.com> Date: Fri Oct 20 04:10:15 2017 +0200 sysconf: Fix missing definition of UIO_MAXIOV on Linux [BZ #22321] After commit 37f802f86400684c8d13403958b2c598721d6360 (Remove __need_IOV_MAX and __need_FOPEN_MAX), UIO_MAXIOV is no longer supplied (indirectly) through <bits/stdio_lim.h>, so sysdeps/posix/sysconf.c no longer sees the definition. (cherry picked from commit 63b4baa44e8d22501c433c4093aa3310f91b6aa2) ----------------------------------------------------------------------- Summary of changes: ChangeLog | 10 ++++++ NEWS | 1 + sysdeps/posix/sysconf.c | 1 + sysdeps/unix/sysv/linux/Makefile | 8 +++- .../unix/sysv/linux/tst-sysconf-iov_max-uapi.c | 13 +++---- .../unix/sysv/linux/tst-sysconf-iov_max.c | 33 ++++++++----------- 6 files changed, 38 insertions(+), 28 deletions(-) copy support/xpipe.c => sysdeps/unix/sysv/linux/tst-sysconf-iov_max-uapi.c (78%) copy debug/tst-ssp-1.c => sysdeps/unix/sysv/linux/tst-sysconf-iov_max.c (59%)