From 5ffbd2015cd9060046f6a5f64cc2f70eaf17f7d1 Mon Sep 17 00:00:00 2001
From: Janneke Nieuwenhuizen <janneke@gnu.org>
Date: Fri, 22 Nov 2024 15:27:36 +0100
Subject: gnu: glibc/hurd: Add patch for the 64bit Hurd, fixing "raise".
This fixes findutil's gnulib-tests's test-sigaction's raise call, by working
around an alleged gcc-14.2 optimization bug. See
<https://lists.gnu.org/archive/html/bug-hurd/2024-11/msg00143.html>.
* gnu/packages/patches/glibc-hurd64-gcc-14.2-tls-bug.patch: New file.
* gnu/local.mk (dist_patch_DATA): Register it.
* gnu/packages/base.scm (glibc/hurd): Use it.
Change-Id: I11e683f521f34dedeb7f739a2545f5d1d866922a
---
.../patches/glibc-hurd64-gcc-14.2-tls-bug.patch | 28 ++++++++++++++++++++++
1 file changed, 28 insertions(+)
create mode 100644 gnu/packages/patches/glibc-hurd64-gcc-14.2-tls-bug.patch
(limited to 'gnu/packages/patches/glibc-hurd64-gcc-14.2-tls-bug.patch')
diff --git a/gnu/packages/patches/glibc-hurd64-gcc-14.2-tls-bug.patch b/gnu/packages/patches/glibc-hurd64-gcc-14.2-tls-bug.patch
new file mode 100644
index 0000000000..5823a230fd
--- /dev/null
+++ b/gnu/packages/patches/glibc-hurd64-gcc-14.2-tls-bug.patch
@@ -0,0 +1,28 @@
+From 0b23ab98d25d880ee602af91e62aa39564510cac Mon Sep 17 00:00:00 2001
+From: Janneke Nieuwenhuizen <janneke@gnu.org>
+Date: Fri, 22 Nov 2024 16:26:08 +0100
+Subject: [PATCH] x86_64-hurd: sigreturn: Hack around gcc-14.2 optimization
+ bug.
+
+See: <https://lists.gnu.org/archive/html/bug-hurd/2024-11/msg00143.html>.
+
+* sysdeps/mach/hurd/x86_64/sigreturn.c (__sigreturn2): Add nop.
+---
+ sysdeps/mach/hurd/x86_64/sigreturn.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/sysdeps/mach/hurd/x86_64/sigreturn.c b/sysdeps/mach/hurd/x86_64/sigreturn.c
+index 7a0193497d..256cc1268a 100644
+--- a/sysdeps/mach/hurd/x86_64/sigreturn.c
++++ b/sysdeps/mach/hurd/x86_64/sigreturn.c
+@@ -45,6 +45,7 @@ __sigreturn2 (struct hurd_sigstate *ss, uintptr_t *usp,
+ (void) __mach_port_mod_refs (__mach_task_self (), reply_port,
+ MACH_PORT_RIGHT_RECEIVE, -1);
+ THREAD_SETMEM (THREAD_SELF, reply_port, sc_reply_port);
++ asm ("nop"); // See <https://lists.gnu.org/archive/html/bug-hurd/2024-11/msg00143.html>.
+
+ asm volatile (
+ /* Point the stack to the register dump. */
+--
+2.46.0
+
--
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