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-rw-r--r--sys-libs/glibc/files/glibc-2.40-libio-legacy.patch30
-rw-r--r--sys-libs/glibc/glibc-2.40-r2.ebuild (renamed from sys-libs/glibc/glibc-2.40-r1.ebuild)1
2 files changed, 31 insertions, 0 deletions
diff --git a/sys-libs/glibc/files/glibc-2.40-libio-legacy.patch b/sys-libs/glibc/files/glibc-2.40-libio-legacy.patch
new file mode 100644
index 000000000000..e0b3b6c35455
--- /dev/null
+++ b/sys-libs/glibc/files/glibc-2.40-libio-legacy.patch
@@ -0,0 +1,30 @@
+https://bugs.gentoo.org/939446
+https://sourceware.org/PR32164
+https://sourceware.org/git/?p=glibc.git;a=commit;h=7073164add3b874cf0c19ca0fb84236f6bb0985d
+
+From 7073164add3b874cf0c19ca0fb84236f6bb0985d Mon Sep 17 00:00:00 2001
+From: Siddhesh Poyarekar <siddhesh@sourceware.org>
+Date: Tue, 3 Sep 2024 14:58:33 -0400
+Subject: [PATCH] libio: Attempt wide backup free only for non-legacy code
+
+_wide_data and _mode are not available in legacy code, so do not attempt
+to free the wide backup buffer in legacy code.
+
+Resolves: BZ #32137 and BZ #27821
+
+Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
+Reviewed-by: Florian Weimer <fweimer@redhat.com>
+(cherry picked from commit ae4d44b1d501421ad9a3af95279b8f4d1546f1ce)
+--- a/libio/genops.c
++++ b/libio/genops.c
+@@ -819,7 +819,7 @@ _IO_unbuffer_all (void)
+ /* Free up the backup area if it was ever allocated. */
+ if (_IO_have_backup (fp))
+ _IO_free_backup_area (fp);
+- if (fp->_mode > 0 && _IO_have_wbackup (fp))
++ if (!legacy && fp->_mode > 0 && _IO_have_wbackup (fp))
+ _IO_free_wbackup_area (fp);
+
+ if (! (fp->_flags & _IO_UNBUFFERED)
+--
+2.43.5
diff --git a/sys-libs/glibc/glibc-2.40-r1.ebuild b/sys-libs/glibc/glibc-2.40-r2.ebuild
index 1c018dc68f75..e0f6fc6aebc8 100644
--- a/sys-libs/glibc/glibc-2.40-r1.ebuild
+++ b/sys-libs/glibc/glibc-2.40-r2.ebuild
@@ -979,6 +979,7 @@ src_prepare() {
fi
einfo "Applying Gentoo Glibc patchset ${patchsetname}"
eapply "${WORKDIR}"/patches
+ eapply "${FILESDIR}"/${P}-libio-legacy.patch
einfo "Done."
fi