Fix shift UB in constants

We were shifting out the top bit of a signed integer.

Author: nikic

Zend/zend_alloc.c

@@ -591,7 +591,7 @@ static zend_always_inline void zend_mm_bitset_reset_range(zend_mm_bitset *bitset
 
 		if (pos != end) {
 			/* reset bits from "bit" to ZEND_MM_BITSET_LEN-1 */
-			tmp = ~((Z_L(1) << bit) - 1);
+			tmp = ~((Z_UL(1) << bit) - 1);
 			bitset[pos++] &= ~tmp;
 			while (pos != end) {
 				/* set all bits */

Zend/zend_compile.h

@@ -516,7 +516,7 @@ struct _zend_execute_data {
 #define ZEND_CALL_FAKE_CLOSURE       (1 << 23)
 #define ZEND_CALL_GENERATOR          (1 << 24)
 #define ZEND_CALL_DYNAMIC            (1 << 25)
-#define ZEND_CALL_SEND_ARG_BY_REF    (1 << 31)
+#define ZEND_CALL_SEND_ARG_BY_REF    (1u << 31)
 
 #define ZEND_CALL_NESTED_FUNCTION    (ZEND_CALL_FUNCTION | ZEND_CALL_NESTED)
 #define ZEND_CALL_NESTED_CODE        (ZEND_CALL_CODE | ZEND_CALL_NESTED)

Zend/zend_gc.c

@@ -78,13 +78,13 @@
 #endif
 
 /* GC_INFO layout */
-#define GC_ADDRESS  0x0fffff
-#define GC_COLOR    0x300000
+#define GC_ADDRESS  0x0fffffu
+#define GC_COLOR    0x300000u
 
-#define GC_BLACK    0x000000 /* must be zero */
-#define GC_WHITE    0x100000
-#define GC_GREY     0x200000
-#define GC_PURPLE   0x300000
+#define GC_BLACK    0x000000u /* must be zero */
+#define GC_WHITE    0x100000u
+#define GC_GREY     0x200000u
+#define GC_PURPLE   0x300000u
 
 /* GC_INFO access */
 #define GC_REF_ADDRESS(ref) \