[SCM] PostGIS branch master updated. 3.6.0rc2-539-ga283c9ff4

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- Log -----------------------------------------------------------------
commit a283c9ff4cf3fc9ec60d1961b313f54c64000b0f
Merge: adef2f6bd b746a8ce7
Author: Darafei Praliaskouski <me at komzpa.net>
Date:   Tue Jun 16 23:01:48 2026 +0400

    Merge pull request #880 from ProjectMutilation/fix-potential-overlap-memcpy
    
    liblwgeom: fix potential overlapping memory copying


commit b746a8ce774f4bf178e6e4b08ac84209746fc8bc
Author: Maksim Korotkov <m.korotkov at postgrespro.ru>
Date:   Tue Jun 16 15:27:33 2026 +0300

    liblwgeom: fix potential overlapping memory copying
    Using memcpy with overlapping memory regions is undefined behavior
    per C standard. Replace with memmove to safely handle the case when
    src and dst point to the same location
    
    Signed-off-by: Maksim Korotkov <m.korotkov at postgrespro.ru>

diff --git a/liblwgeom/ptarray.c b/liblwgeom/ptarray.c
index 5c6796e75..7631081bc 100644
--- a/liblwgeom/ptarray.c
+++ b/liblwgeom/ptarray.c
@@ -1852,7 +1852,7 @@ ptarray_simplify_in_place(POINTARRAY *pa, double tolerance, uint32_t minpts)
 	{
 		/* If there are 2 points remaining, it has to be first and last as
 		 * we added those at the start */
-		memcpy(pa->serialized_pointlist + pt_size * kept_it,
+		memmove(pa->serialized_pointlist + pt_size * kept_it,
 		       pa->serialized_pointlist + pt_size * (pa->npoints - 1),
 		       pt_size);
 	}

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

Summary of changes:
 liblwgeom/ptarray.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)


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