From d5ea5e8aed304337489a4dbbaf0f00d40bd92fc6 Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Sat, 28 Jun 2025 17:36:04 -0700
Subject: [PATCH] od: fix integer overflow with large pseudos

* src/od.c (format_address_label): Diagnose overflow.
---
 src/od.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/od.c b/src/od.c
index b3af4c72f7..c3c76cc866 100644
--- a/src/od.c
+++ b/src/od.c
@@ -1227,7 +1227,12 @@ static void
 format_address_label (intmax_t address, char c)
 {
   format_address_std (address, ' ');
-  format_address_paren (address + pseudo_offset, c);
+
+  intmax_t addr;
+  if (ckd_add (&addr, address, pseudo_offset))
+    error (EXIT_FAILURE, 0, _("pseudo address too large for input"));
+
+  format_address_paren (addr, c);
 }
 
 /* Write N_BYTES bytes from CURR_BLOCK to standard output once for each
-- 
2.47.3