From 4f2c6c86db3a3f102c169597982dc6f885a26e19 Mon Sep 17 00:00:00 2001
From: abn <adrien.bruneton@cea.fr>
Date: Thu, 11 Apr 2024 16:14:34 +0200
Subject: [PATCH] Minor bug fix seen by '-fsanitize'

---
 src/INTERP_KERNEL/TransformedTriangleIntersect.cxx | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/INTERP_KERNEL/TransformedTriangleIntersect.cxx b/src/INTERP_KERNEL/TransformedTriangleIntersect.cxx
index 9fc3a1674..36727ef26 100644
--- a/src/INTERP_KERNEL/TransformedTriangleIntersect.cxx
+++ b/src/INTERP_KERNEL/TransformedTriangleIntersect.cxx
@@ -342,9 +342,14 @@ namespace INTERP_KERNEL
         for(int j = 0 ; j < 2; ++j)
           {
             const int dpIdx = DP_INDEX[3*facets[j] + i];
-            const DoubleProduct dp = DP_FOR_SEG_FACET_INTERSECTION[dpIdx];
-            const double sign = SIGN_FOR_SEG_FACET_INTERSECTION[dpIdx];
-            c[j] = dpIdx < 0.0 ? 0.0 : sign * calcStableC(seg, dp);
+            if (dpIdx != -1)
+              {
+                const DoubleProduct dp = DP_FOR_SEG_FACET_INTERSECTION[dpIdx];
+                const double sign = SIGN_FOR_SEG_FACET_INTERSECTION[dpIdx];
+                c[j] = sign * calcStableC(seg, dp);
+              }
+            else
+              c[j] = 0.0;
           }
 
         pt[i] = (c[0] * s[0] + c[1] * s[1]) / denominator;
-- 
2.30.2