From a439978f055ab40ff51314df329c084b6817318f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alex=20R=C3=B8nne=20Petersen?= <alex@alexrp.com>
Date: Sat, 23 May 2026 09:14:13 +0200
Subject: [PATCH] std.debug.cpu_context: fix alpha-openbsd ucontext_t

These fields need to be wrapped in an mcontext field so the common code in
fromPosixSignalContext() can work with it.
---
 lib/std/debug/cpu_context.zig | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/lib/std/debug/cpu_context.zig b/lib/std/debug/cpu_context.zig
index 4766a124caa8bd2199320bb1f8c2bba8dff4b8a1..29e1731ee4a6b294dd8178237f2fce5954e15ce2 100644
--- a/lib/std/debug/cpu_context.zig
+++ b/lib/std/debug/cpu_context.zig
@@ -2330,9 +2330,11 @@ const signal_ucontext_t = switch (native_os) {
         .alpha => extern struct {
             _cookie: i64,
             _mask: i64,
-            pc: u64,
-            _ps: i64,
-            r: [32]u64,
+            mcontext: extern struct {
+                pc: u64,
+                _ps: i64,
+                r: [32]u64,
+            },
         },
         // https://github.com/openbsd/src/blob/42468faed8369d07ae49ae02dd71ec34f59b66cd/sys/arch/arm/include/signal.h
         .arm => extern struct {
-- 
2.54.0