[SCM] PostGIS branch master updated. 3.6.0rc2-510-g38faa8d51

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- Log -----------------------------------------------------------------
commit 38faa8d5146b32dbc71a99e64208fd23719999e8
Author: Paul Ramsey <pramsey at cleverelephant.ca>
Date:   Tue Jun 9 22:38:17 2026 +0000

    Fix ST_LineFromEncodedPolyline dropping close points
    
    Use int32_t accumulators instead of double.
    Closes #5357

diff --git a/liblwgeom/cunit/cu_in_encoded_polyline.c b/liblwgeom/cunit/cu_in_encoded_polyline.c
index f76b726f9..6af16b9a2 100644
--- a/liblwgeom/cunit/cu_in_encoded_polyline.c
+++ b/liblwgeom/cunit/cu_in_encoded_polyline.c
@@ -53,6 +53,15 @@ static void in_encoded_polyline_test_precision(void)
 	    "SRID=4326;LINESTRING(-0.250691 49.283048,-0.250633 49.283376,-0.250502 49.283972,-0.251245 49.284028,-0.251938 49.284232,-0.251938 49.2842)");
 }
 
+static void in_encoded_polyline_test_close_points(void)
+{
+	/* #5357: two close points must not collapse to one */
+	do_encoded_polyline_test(
+		"__nphBgcoeiA?@",
+		6,
+		"SRID=4326;LINESTRING(38.903876 55.336448,38.903875 55.336448)");
+}
+
 /*
 ** Used by test harness to register the tests in this file.
 */
@@ -62,4 +71,5 @@ void in_encoded_polyline_suite_setup(void)
 	CU_pSuite suite = CU_add_suite("encoded_polyline_input", NULL, NULL);
 	PG_ADD_TEST(suite, in_encoded_polyline_test_geoms);
 	PG_ADD_TEST(suite, in_encoded_polyline_test_precision);
+	PG_ADD_TEST(suite, in_encoded_polyline_test_close_points);
 }
diff --git a/liblwgeom/lwin_encoded_polyline.c b/liblwgeom/lwin_encoded_polyline.c
index 7212314a6..2bb9f7341 100644
--- a/liblwgeom/lwin_encoded_polyline.c
+++ b/liblwgeom/lwin_encoded_polyline.c
@@ -26,6 +26,7 @@
 #include <assert.h>
 #include <string.h>
 #include <math.h>
+#include <stdint.h>
 
 #include "liblwgeom.h"
 #include "../postgis_config.h"
@@ -39,8 +40,8 @@ lwgeom_from_encoded_polyline(const char *encodedpolyline, int precision)
   int idx = 0;
 	double scale = pow(10,precision);
 
-  float latitude = 0.0f;
-  float longitude = 0.0f;
+  int32_t latitude = 0;
+  int32_t longitude = 0;
 
   pa = ptarray_construct_empty(LW_FALSE, LW_FALSE, 1);
 
@@ -55,7 +56,7 @@ lwgeom_from_encoded_polyline(const char *encodedpolyline, int precision)
       res |= (byte & 0x1F) << shift;
       shift += 5;
     } while (byte >= 0x20);
-    float deltaLat = ((res & 1) ? ~(res >> 1) : (res >> 1));
+    int32_t deltaLat = ((res & 1) ? ~(res >> 1) : (res >> 1));
     latitude += deltaLat;
 
     shift = 0;
@@ -65,7 +66,7 @@ lwgeom_from_encoded_polyline(const char *encodedpolyline, int precision)
       res |= (byte & 0x1F) << shift;
       shift += 5;
     } while (byte >= 0x20);
-    float deltaLon = ((res & 1) ? ~(res >> 1) : (res >> 1));
+    int32_t deltaLon = ((res & 1) ? ~(res >> 1) : (res >> 1));
     longitude += deltaLon;
 
     pt.x = longitude/scale;
diff --git a/regress/core/tickets.sql b/regress/core/tickets.sql
index 1dd8f2e98..7da7f4c1f 100644
--- a/regress/core/tickets.sql
+++ b/regress/core/tickets.sql
@@ -1641,3 +1641,6 @@ INSERT INTO fault6028 (fid, geom)
 SELECT * FROM fault6028;
 DROP TABLE IF EXISTS fault6028;
 
+-- #5357
+SELECT '#5357', ST_AsText(ST_LineFromEncodedPolyline('__nphBgcoeiA?@', 6), 6);
+
diff --git a/regress/core/tickets_expected b/regress/core/tickets_expected
index c6185f24e..dcdffa995 100644
--- a/regress/core/tickets_expected
+++ b/regress/core/tickets_expected
@@ -498,3 +498,4 @@ public|test5978|shape|2|4326|POINT
 #5938|1FF00F212|t
 #5938|1FF00F212|t
 1|01030000209713000000000000
+#5357|LINESTRING(38.903876 55.336448,38.903875 55.336448)

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

Summary of changes:
 liblwgeom/cunit/cu_in_encoded_polyline.c | 10 ++++++++++
 liblwgeom/lwin_encoded_polyline.c        |  9 +++++----
 regress/core/tickets.sql                 |  3 +++
 regress/core/tickets_expected            |  1 +
 4 files changed, 19 insertions(+), 4 deletions(-)


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