From 8deb5a014f6cf65ef1b6f749359912e7561e35c4 Mon Sep 17 00:00:00 2001
From: Marco Bodrato <bodrato@mail.dm.unipi.it>
Date: Mon, 14 Feb 2022 14:57:38 +0100
Subject: mpz/gcd_ui.c: Handle NULL in (v > GMP_NUMB_MAX) branch (unused)

---
 mpz/gcd_ui.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

(limited to 'mpz')

diff --git a/mpz/gcd_ui.c b/mpz/gcd_ui.c
index ee5bff81c..1e7976ba2 100644
--- a/mpz/gcd_ui.c
+++ b/mpz/gcd_ui.c
@@ -40,8 +40,16 @@ mpz_gcd_ui (mpz_ptr w, mpz_srcptr u, unsigned long int v)
 #if BITS_PER_ULONG > GMP_NUMB_BITS  /* avoid warnings about shift amount */
   if (v > GMP_NUMB_MAX)
     {
-      mpz_t vz;
-      mp_limb_t vlimbs[2];
+      mpz_t vz, lw;
+      mp_limb_t vlimbs[2], wlimbs[2];
+
+      if (w == NULL)
+       {
+         PTR(lw) = wlimbs;
+         ALLOC(lw) = 2;
+         SIZ(lw) = 0;
+         w = lw;
+       }
       vlimbs[0] = v & GMP_NUMB_MASK;
       vlimbs[1] = v >> GMP_NUMB_BITS;
       PTR(vz) = vlimbs;
-- 
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