From fcfbedc2f06ba5700092a2cb444261133944be01 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Wed, 25 Sep 2024 20:39:18 -0700
Subject: work around riscv64 backend deficiencies

---
 lib/std/debug.zig | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'lib/std/debug.zig')

diff --git a/lib/std/debug.zig b/lib/std/debug.zig
index 7bfc6b321e..98bf6b1fd4 100644
--- a/lib/std/debug.zig
+++ b/lib/std/debug.zig
@@ -629,6 +629,11 @@ pub fn fmtPanicCause(buffer: []u8, cause: std.builtin.PanicCause) usize {
         },
         .sentinel_mismatch_other => i += fmtBuf(buffer[i..], "sentinel mismatch"),
         .unwrap_error => |err| {
+            if (builtin.zig_backend == .stage2_riscv64) {
+                // https://github.com/ziglang/zig/issues/21519
+                i += fmtBuf(buffer[i..], "attempt to unwrap error");
+                return i;
+            }
             i += fmtBuf(buffer[i..], "attempt to unwrap error: ");
             i += fmtBuf(buffer[i..], @errorName(err));
         },
-- 
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