[SCM] PostGIS branch master updated. 3.5.0-40-gb32c5c120

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- Log -----------------------------------------------------------------
commit b32c5c120d7ba40801b27b947337d9da509ca799
Merge: 56622d959 bdfdde58f
Author: pramsey <pramsey at cleverelephant.ca>
Date:   Tue Oct 29 15:19:33 2024 -0700

    Merge pull request 'Fix undefined behavior in p_int using int64_t' (!221) from lbartoletti/postgis:fix_mvt_undefined_behaviour into master
    
    Reviewed-on: https://git.osgeo.org/gitea/postgis/postgis/pulls/221


commit bdfdde58faca8e99e34f4cefd9e52b2b96167254
Author: Loïc Bartoletti <loic.bartoletti at oslandia.com>
Date:   Fri Sep 27 09:17:48 2024 +0200

    Fix undefined behavior in p_int using int64_t
    
    Resolve undefined behavior when shifting 32-bit value by 31 bits.
    Use int64_t for the right shift operation to ensure defined behavior
    while maintaining original functionality and passing all tests.

diff --git a/postgis/mvt.c b/postgis/mvt.c
index 85ee75305..14691b551 100644
--- a/postgis/mvt.c
+++ b/postgis/mvt.c
@@ -144,7 +144,7 @@ static inline uint32_t c_int(enum mvt_cmd_id id, uint32_t count)
 
 static inline uint32_t p_int(int32_t value)
 {
-	return (value << 1) ^ (value >> 31);
+	return (value << 1) ^ ((int64_t)value >> 31);
 }
 
 static uint32_t encode_ptarray(enum mvt_type type, POINTARRAY *pa, uint32_t *buffer, int32_t *px, int32_t *py)

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

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


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