Resolve some MSVC C4244 level 2 warnings

These got already approval by the respective code owners in phpGH-17076.

Author: cmb69

ext/ffi/ffi.c

@@ -7491,10 +7491,10 @@ void zend_ffi_expr_cast(zend_ffi_val *val, zend_ffi_dcl *dcl) /* {{{ */
 		case ZEND_FFI_TYPE_FLOAT:
 			if (val->kind == ZEND_FFI_VAL_UINT32 || val->kind == ZEND_FFI_VAL_UINT64) {
 				val->kind = ZEND_FFI_VAL_FLOAT;
-				val->d = val->u64;
+				val->d = (zend_ffi_double) val->u64;
 			} else if (val->kind == ZEND_FFI_VAL_INT32 || val->kind == ZEND_FFI_VAL_INT64) {
 				val->kind = ZEND_FFI_VAL_FLOAT;
-				val->d = val->i64;
+				val->d = (zend_ffi_double) val->i64;
 			} else if (val->kind == ZEND_FFI_VAL_FLOAT || val->kind == ZEND_FFI_VAL_DOUBLE || val->kind == ZEND_FFI_VAL_LONG_DOUBLE) {
 				val->kind = ZEND_FFI_VAL_FLOAT;
 			} else if (val->kind == ZEND_FFI_VAL_CHAR) {
@@ -7507,10 +7507,10 @@ void zend_ffi_expr_cast(zend_ffi_val *val, zend_ffi_dcl *dcl) /* {{{ */
 		case ZEND_FFI_TYPE_DOUBLE:
 			if (val->kind == ZEND_FFI_VAL_UINT32 || val->kind == ZEND_FFI_VAL_UINT64) {
 				val->kind = ZEND_FFI_VAL_DOUBLE;
-				val->d = val->u64;
+				val->d = (zend_ffi_double) val->u64;
 			} else if (val->kind == ZEND_FFI_VAL_INT32 || val->kind == ZEND_FFI_VAL_INT64) {
 				val->kind = ZEND_FFI_VAL_DOUBLE;
-				val->d = val->i64;
+				val->d = (zend_ffi_double) val->i64;
 			} else if (val->kind == ZEND_FFI_VAL_FLOAT || val->kind == ZEND_FFI_VAL_DOUBLE || val->kind == ZEND_FFI_VAL_LONG_DOUBLE) {
 				val->kind = ZEND_FFI_VAL_DOUBLE;
 			} else if (val->kind == ZEND_FFI_VAL_CHAR) {
@@ -7546,7 +7546,7 @@ void zend_ffi_expr_cast(zend_ffi_val *val, zend_ffi_dcl *dcl) /* {{{ */
 				val->kind = ZEND_FFI_VAL_UINT32;
 			} else if (val->kind == ZEND_FFI_VAL_FLOAT || val->kind == ZEND_FFI_VAL_DOUBLE || val->kind == ZEND_FFI_VAL_LONG_DOUBLE) {
 				val->kind = ZEND_FFI_VAL_UINT32;
-				val->u64 = val->d;
+				val->u64 = (uint64_t) val->d;
 			} else if (val->kind == ZEND_FFI_VAL_CHAR) {
 				val->kind = ZEND_FFI_VAL_UINT32;
 				val->u64 = val->ch;
@@ -7561,7 +7561,7 @@ void zend_ffi_expr_cast(zend_ffi_val *val, zend_ffi_dcl *dcl) /* {{{ */
 				val->kind = ZEND_FFI_VAL_INT32;
 			} else if (val->kind == ZEND_FFI_VAL_FLOAT || val->kind == ZEND_FFI_VAL_DOUBLE || val->kind == ZEND_FFI_VAL_LONG_DOUBLE) {
 				val->kind = ZEND_FFI_VAL_INT32;
-				val->i64 = val->d;
+				val->i64 = (uint64_t) val->d;
 			} else if (val->kind == ZEND_FFI_VAL_CHAR) {
 				val->kind = ZEND_FFI_VAL_INT32;
 				val->i64 = val->ch;
@@ -7574,7 +7574,7 @@ void zend_ffi_expr_cast(zend_ffi_val *val, zend_ffi_dcl *dcl) /* {{{ */
 				val->kind = ZEND_FFI_VAL_UINT64;
 			} else if (val->kind == ZEND_FFI_VAL_FLOAT || val->kind == ZEND_FFI_VAL_DOUBLE || val->kind == ZEND_FFI_VAL_LONG_DOUBLE) {
 				val->kind = ZEND_FFI_VAL_UINT64;
-				val->u64 = val->d;
+				val->u64 = (uint64_t) val->d;
 			} else if (val->kind == ZEND_FFI_VAL_CHAR) {
 				val->kind = ZEND_FFI_VAL_UINT64;
 				val->u64 = val->ch;
@@ -7591,7 +7591,7 @@ void zend_ffi_expr_cast(zend_ffi_val *val, zend_ffi_dcl *dcl) /* {{{ */
 				val->ch = val->i64;
 			} else if (val->kind == ZEND_FFI_VAL_FLOAT || val->kind == ZEND_FFI_VAL_DOUBLE || val->kind == ZEND_FFI_VAL_LONG_DOUBLE) {
 				val->kind = ZEND_FFI_VAL_CHAR;
-				val->ch = val->d;
+				val->ch = (char) val->d;
 			} else if (val->kind == ZEND_FFI_VAL_CHAR) {
 			} else {
 				val->kind = ZEND_FFI_VAL_ERROR;
@@ -7602,7 +7602,7 @@ void zend_ffi_expr_cast(zend_ffi_val *val, zend_ffi_dcl *dcl) /* {{{ */
 				val->kind = ZEND_FFI_VAL_UINT32;
 			} else if (val->kind == ZEND_FFI_VAL_FLOAT || val->kind == ZEND_FFI_VAL_DOUBLE || val->kind == ZEND_FFI_VAL_LONG_DOUBLE) {
 				val->kind = ZEND_FFI_VAL_UINT32;
-				val->u64 = val->d;
+				val->u64 = (uint64_t) val->d;
 			} else if (val->kind == ZEND_FFI_VAL_CHAR) {
 				val->kind = ZEND_FFI_VAL_UINT32;
 				val->u64 = val->ch;

ext/mbstring/mbstring.c

@@ -3348,7 +3348,7 @@ try_next_encoding:;
 	}
 
 	for (size_t i = 0; i < length; i++) {
-		array[i].demerits *= array[i].multiplier;
+		array[i].demerits = (uint64_t) (array[i].demerits * array[i].multiplier);
 	}
 
 	return length;

ext/soap/php_encoding.c

@@ -1028,7 +1028,7 @@ static zval *to_zval_double(zval *ret, encodeTypePtr type, xmlNodePtr data)
 			whiteSpace_collapse(data->children->content);
 			switch (is_numeric_string((char*)data->children->content, strlen((char*)data->children->content), &lval, &dval, 0)) {
 				case IS_LONG:
-					ZVAL_DOUBLE(ret, lval);
+					ZVAL_DOUBLE(ret, (double) lval);
 					break;
 				case IS_DOUBLE:
 					ZVAL_DOUBLE(ret, dval);