[SCM] PostGIS branch stable-3.4 updated. 3.4.4-66-gfdfffdb43

[git at osgeo.org]

This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "PostGIS".

The branch, stable-3.4 has been updated
       via  fdfffdb437bd937aa37c59ca9590d73882779c6e (commit)
      from  e7b06279475fceb45def9292a2c5d6544d184508 (commit)

Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.

- Log -----------------------------------------------------------------
commit fdfffdb437bd937aa37c59ca9590d73882779c6e
Author: Sandro Santilli <strk at kbt.io>
Date:   Tue Jan 13 12:05:57 2026 +0100

    Fix robustness issue in ptarray_contains_point
    
    References #6023 in 3.4 branch (3.4.5dev)
    
    Includes unit test

diff --git a/NEWS b/NEWS
index a1f1b4576..3d0347ef7 100644
--- a/NEWS
+++ b/NEWS
@@ -6,6 +6,7 @@ Proj 6.1+ required.
 
 * Bug Fixes *
 
+  - #6023, Fix robustness issue in ptarray_contains_point (Sandro Santilli)
   - #6027, Fix RemoveUnusedPrimitives without topology in search_path (Sandro Santilli)
   - #5978, fix parsing of constraints in geometry_columns (Paul Ramsey)
   - #5977, Fix downgrade protection with standard conforming strings off (Sandro Santilli)
diff --git a/liblwgeom/cunit/cu_ptarray.c b/liblwgeom/cunit/cu_ptarray.c
index bfb830284..bb1f43925 100644
--- a/liblwgeom/cunit/cu_ptarray.c
+++ b/liblwgeom/cunit/cu_ptarray.c
@@ -426,6 +426,17 @@ static void test_ptarray_contains_point()
 	rv = ptarray_contains_point(pa, &pt);
 	CU_ASSERT_EQUAL(rv, LW_INSIDE);
 
+	lwline_free(lwline);
+
+
+	/* Test for https://trac.osgeo.org/postgis/ticket/6023 */
+	lwline = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(11.230120879533454 62.84897119848748,11.230120879533905 62.8489711984873,11.23020501303477 62.84900750109812,11.230170431987244 62.84904481447776,11.230117909393426 62.8489943480894,11.230120879533454 62.84897119848748)"));
+	pa = lwline->points;
+	pt = getPoint2d(lwline->points, 0);
+	rv = ptarray_contains_point(pa, &pt);
+	ASSERT_INT_EQUAL(rv, LW_BOUNDARY);
+
+
 	lwline_free(lwline);
 }
 
diff --git a/liblwgeom/ptarray.c b/liblwgeom/ptarray.c
index 12114bbf2..74141aefd 100644
--- a/liblwgeom/ptarray.c
+++ b/liblwgeom/ptarray.c
@@ -772,6 +772,12 @@ ptarray_contains_point_partial(const POINTARRAY *pa, const POINT2D *pt, int chec
 	{
 		seg2 = getPoint2d_cp(pa, i);
 
+		/* This is required for robustness, see #6023 */
+		if (p2d_same(seg1, pt))
+		{
+			return LW_BOUNDARY;
+		}
+
 		/* Zero length segments are ignored. */
 		if ( seg1->x == seg2->x && seg1->y == seg2->y )
 		{

-----------------------------------------------------------------------

Summary of changes:
 NEWS                         |  1 +
 liblwgeom/cunit/cu_ptarray.c | 11 +++++++++++
 liblwgeom/ptarray.c          |  6 ++++++
 3 files changed, 18 insertions(+)


hooks/post-receive
-- 
PostGIS