diff --git a/gcc/testsuite/gcc.dg/pr110731.c b/gcc/testsuite/gcc.dg/pr110731.c
new file mode 100644
index 00000000000..7da905d3163
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr110731.c
@@ -0,0 +1,17 @@
+/* PR tree-optimization/110731 */
+/* { dg-do run { target int128 } } */
+/* { dg-options "-O2" } */
+
+__int128
+foo (void)
+{
+  struct S { __int128 f : 119; } s = { ((__int128) -18014398509481984) << 64 };
+  return s.f / 2;
+}
+
+int
+main ()
+{
+  if (foo () != (((__int128) -9007199254740992) << 64))
+    __builtin_abort ();
+}
diff --git a/gcc/wide-int.cc b/gcc/wide-int.cc
index c6a9e2d49b2..81b7be85fe3 100644
--- a/gcc/wide-int.cc
+++ b/gcc/wide-int.cc
@@ -1911,9 +1911,9 @@ wi::divmod_internal (HOST_WIDE_INT *quotient, unsigned int *remainder_len,
     }
 
   wi_unpack (b_dividend, dividend.get_val (), dividend.get_len (),
-	     dividend_blocks_needed, dividend_prec, sgn);
+	     dividend_blocks_needed, dividend_prec, UNSIGNED);
   wi_unpack (b_divisor, divisor.get_val (), divisor.get_len (),
-	     divisor_blocks_needed, divisor_prec, sgn);
+	     divisor_blocks_needed, divisor_prec, UNSIGNED);
 
   m = dividend_blocks_needed;
   b_dividend[m] = 0;