Fix -Wint-to-pointer-cast warnings in the CALL VM on 32-bit

ZEND_VM_ENTER_BIT tags the opline returned by CALL VM handlers. It is
1ULL so that ~ZEND_VM_ENTER_BIT keeps the upper half of 64-bit pointers,
but on 32-bit platforms it widens the tagged pointer expressions to
64 bits, and casting those back to a pointer warns. This breaks
--enable-werror builds where no global VM registers are used, e.g. arm32,
or i386 with --disable-gcc-global-regs, which also hits the copy of the
definition in the JIT.

Use (uintptr_t)1 instead, which is exactly pointer-sized everywhere.

Author: marc-mabe

Zend/zend_vm_execute.h

@@ -2035,7 +2035,7 @@ function gen_executor($f, $skl, $spec, $kind, $executor_name, $initializer_name)
                             out($f,"# define ZEND_VM_ENTER()           opline = EG(current_execute_data)->opline; ZEND_VM_ENTER_EX()\n");
                             out($f,"# define ZEND_VM_LEAVE()           return  2\n");
                             out($f,"#else\n");
-                            out($f,"# define ZEND_VM_ENTER_BIT         1ULL\n");
+                            out($f,"# define ZEND_VM_ENTER_BIT         ((uintptr_t)1)\n");
                             out($f,"# define ZEND_VM_ENTER_EX()        return (zend_op*)((uintptr_t)opline | ZEND_VM_ENTER_BIT)\n");
                             out($f,"# define ZEND_VM_ENTER()           execute_data = EG(current_execute_data); LOAD_OPLINE(); ZEND_VM_ENTER_EX()\n");
                             out($f,"# define ZEND_VM_LEAVE()           return (zend_op*)((uintptr_t)opline | ZEND_VM_ENTER_BIT)\n");

Zend/zend_vm_gen.php

@@ -222,7 +222,7 @@ extern const zend_op *zend_jit_interrupt_op;
 # define ZEND_OPCODE_HANDLER_ARGS_PASSTHRU    EXECUTE_DATA_C OPLINE_CC
 # define ZEND_OPCODE_HANDLER_ARGS_EX          EXECUTE_DATA_D OPLINE_DC,
 # define ZEND_OPCODE_HANDLER_ARGS_PASSTHRU_EX EXECUTE_DATA_C OPLINE_CC,
-# define ZEND_VM_ENTER_BIT 1ULL
+# define ZEND_VM_ENTER_BIT ((uintptr_t)1)
 #endif
 
 /* VM helpers */