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110 lines
4.6 KiB
Diff
110 lines
4.6 KiB
Diff
From 5e98482b7f8a32b769426b279742504aa45ba9a7 Mon Sep 17 00:00:00 2001
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From: Ned Deily <nad@python.org>
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Date: Wed, 5 Aug 2026 10:30:17 +0300
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Subject: [PATCH] (downstream) [3.10] gh-153711: Avoid use of dup3 and pipe2
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calls introduced in macOS 27 (#155211)
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---
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...-08-05-02-02-33.gh-issue-153711.pO9fFb.rst | 3 +++
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configure | 23 +++++++++++++++++--
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configure.ac | 11 +++++++--
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3 files changed, 33 insertions(+), 4 deletions(-)
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create mode 100644 Misc/NEWS.d/next/macOS/2026-08-05-02-02-33.gh-issue-153711.pO9fFb.rst
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diff --git a/Misc/NEWS.d/next/macOS/2026-08-05-02-02-33.gh-issue-153711.pO9fFb.rst b/Misc/NEWS.d/next/macOS/2026-08-05-02-02-33.gh-issue-153711.pO9fFb.rst
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new file mode 100644
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index 00000000000..90804c179a4
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--- /dev/null
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+++ b/Misc/NEWS.d/next/macOS/2026-08-05-02-02-33.gh-issue-153711.pO9fFb.rst
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@@ -0,0 +1,3 @@
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+On macOS, do not attempt to use the :manpage:`dup3(2)` and
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+:manpage:`pipe2(2)` system calls introduced in
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+macOS 27 to prevent problems when running on older systems.
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diff --git a/configure b/configure
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index 4b71c4e00f8..bfe3e819fff 100755
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--- a/configure
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+++ b/configure
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@@ -11952,7 +11952,7 @@ fi
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# checks for library functions
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for ac_func in alarm accept4 setitimer getitimer bind_textdomain_codeset chown \
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- clock confstr close_range copy_file_range ctermid dup3 execv explicit_bzero \
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+ clock confstr close_range copy_file_range ctermid execv explicit_bzero \
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explicit_memset faccessat fchmod fchmodat fchown fchownat \
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fdwalk fexecve fdopendir fork fpathconf fstatat ftime ftruncate futimesat \
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futimens futimes gai_strerror getentropy \
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@@ -11962,7 +11962,7 @@ for ac_func in alarm accept4 setitimer getitimer bind_textdomain_codeset chown \
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if_nameindex \
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initgroups kill killpg lchown lockf linkat lstat lutimes mmap \
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memrchr mbrtowc mkdirat mkfifo \
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- madvise mkfifoat mknod mknodat mktime mremap nice openat pathconf pause pipe2 plock poll \
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+ madvise mkfifoat mknod mknodat mktime mremap nice openat pathconf pause plock poll \
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posix_fallocate posix_fadvise posix_spawn posix_spawnp pread preadv preadv2 \
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pthread_condattr_setclock pthread_init pthread_kill pwrite pwritev pwritev2 \
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readlink readlinkat readv realpath renameat \
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@@ -12005,6 +12005,25 @@ done
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fi
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+# macOS introduced dup3 and pipe2 in macOS 27, late in the
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+# lifetime of this version of Python. Rather than adding weaklinking
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+# support for them, just continue to ignore them.
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+if test "$ac_sys_system" != "Darwin"; then
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+ ac_fn_c_check_func "$LINENO" "dup3" "ac_cv_func_dup3"
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+if test "x$ac_cv_func_dup3" = xyes
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+then :
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+ printf '%s\n' "#define HAVE_DUP3 1" >>confdefs.h
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+
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+fi
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+ac_fn_c_check_func "$LINENO" "pipe2" "ac_cv_func_pipe2"
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+if test "x$ac_cv_func_pipe2" = xyes
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+then :
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+ printf '%s\n' "#define HAVE_PIPE2 1" >>confdefs.h
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+
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+fi
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+
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+fi
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+
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ac_fn_c_check_decl "$LINENO" "dirfd" "ac_cv_have_decl_dirfd" "#include <sys/types.h>
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#include <dirent.h>
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"
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diff --git a/configure.ac b/configure.ac
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index ac3be3850a9..0b88132edfb 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -3708,7 +3708,7 @@ fi
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# checks for library functions
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AC_CHECK_FUNCS(alarm accept4 setitimer getitimer bind_textdomain_codeset chown \
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- clock confstr close_range copy_file_range ctermid dup3 execv explicit_bzero \
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+ clock confstr close_range copy_file_range ctermid execv explicit_bzero \
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explicit_memset faccessat fchmod fchmodat fchown fchownat \
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fdwalk fexecve fdopendir fork fpathconf fstatat ftime ftruncate futimesat \
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futimens futimes gai_strerror getentropy \
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@@ -3718,7 +3718,7 @@ AC_CHECK_FUNCS(alarm accept4 setitimer getitimer bind_textdomain_codeset chown \
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if_nameindex \
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initgroups kill killpg lchown lockf linkat lstat lutimes mmap \
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memrchr mbrtowc mkdirat mkfifo \
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- madvise mkfifoat mknod mknodat mktime mremap nice openat pathconf pause pipe2 plock poll \
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+ madvise mkfifoat mknod mknodat mktime mremap nice openat pathconf pause plock poll \
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posix_fallocate posix_fadvise posix_spawn posix_spawnp pread preadv preadv2 \
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pthread_condattr_setclock pthread_init pthread_kill pwrite pwritev pwritev2 \
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readlink readlinkat readv realpath renameat \
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@@ -3740,6 +3740,13 @@ if test "$MACHDEP" != linux; then
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AC_CHECK_FUNCS(lchmod)
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fi
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+# macOS introduced dup3 and pipe2 in macOS 27, late in the
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+# lifetime of this version of Python. Rather than adding weaklinking
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+# support for them, just continue to ignore them.
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+if test "$ac_sys_system" != "Darwin"; then
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+ AC_CHECK_FUNCS([dup3 pipe2])
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+fi
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+
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AC_CHECK_DECL(dirfd,
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AC_DEFINE(HAVE_DIRFD, 1,
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Define if you have the 'dirfd' function or macro.), ,
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--
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2.55.0.windows.3
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