Add rules for fd_set macros

Author: lucic71

cpp2rust/compat/sys/select.h

@@ -0,0 +1,19 @@
+// Copyright (c) 2022-present INESC-ID.
+// Distributed under the MIT license that can be found in the LICENSE file.
+
+#include_next <sys/select.h>
+
+#undef FD_SET
+#undef FD_CLR
+#undef FD_ISSET
+#undef FD_ZERO
+
+void cpp2rust_fd_set(int fd, fd_set *set);
+void cpp2rust_fd_clr(int fd, fd_set *set);
+int cpp2rust_fd_isset(int fd, const fd_set *set);
+void cpp2rust_fd_zero(fd_set *set);
+
+#define FD_SET(fd, set) cpp2rust_fd_set(fd, set)
+#define FD_CLR(fd, set) cpp2rust_fd_clr(fd, set)
+#define FD_ISSET(fd, set) cpp2rust_fd_isset(fd, set)
+#define FD_ZERO(set) cpp2rust_fd_zero(set)

rules/select/src.cpp

@@ -3,7 +3,14 @@
 
 #include <sys/select.h>
 
+using t1 = fd_set;
+
 int f1(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
        struct timeval *timeout) {
   return select(nfds, readfds, writefds, exceptfds, timeout);
 }
+
+void f2(int fd, fd_set *set) { return FD_SET(fd, set); }
+void f3(int fd, fd_set *set) { return FD_CLR(fd, set); }
+int f4(int fd, const fd_set *set) { return FD_ISSET(fd, set); }
+void f5(fd_set *set) { return FD_ZERO(set); }

rules/select/tgt_unsafe.rs

@@ -1,6 +1,10 @@
 // Copyright (c) 2022-present INESC-ID.
 // Distributed under the MIT license that can be found in the LICENSE file.
 
+unsafe fn types() {
+    let t1: ::libc::fd_set = std::mem::zeroed::<::libc::fd_set>();
+}
+
 unsafe fn f1(
     a0: i32,
     a1: *mut ::libc::fd_set,
@@ -10,3 +14,16 @@ unsafe fn f1(
 ) -> i32 {
     libc::select(a0, a1, a2, a3, a4)
 }
+
+unsafe fn f2(a0: i32, a1: *mut ::libc::fd_set) {
+    libc::FD_SET(a0, a1);
+}
+unsafe fn f3(a0: i32, a1: *mut ::libc::fd_set) {
+    libc::FD_CLR(a0, a1);
+}
+unsafe fn f4(a0: i32, a1: *const ::libc::fd_set) -> i32 {
+    libc::FD_ISSET(a0, a1) as i32
+}
+unsafe fn f5(a0: *mut ::libc::fd_set) {
+    libc::FD_ZERO(a0);
+}

tests/unit/fd_set_macros.c

@@ -0,0 +1,14 @@
+// no-compile: refcount
+#include <assert.h>
+#include <sys/select.h>
+
+int main() {
+  fd_set set;
+  FD_ZERO(&set);
+  assert(!FD_ISSET(3, &set));
+  FD_SET(3, &set);
+  assert(FD_ISSET(3, &set));
+  FD_CLR(3, &set);
+  assert(!FD_ISSET(3, &set));
+  return 0;
+}

tests/unit/out/unsafe/fd_set_macros.rs

@@ -0,0 +1,29 @@
+extern crate libc;
+use libc::*;
+extern crate libcc2rs;
+use libcc2rs::*;
+use std::collections::BTreeMap;
+use std::io::{Read, Seek, Write};
+use std::os::fd::{AsFd, FromRawFd, IntoRawFd};
+use std::rc::Rc;
+pub fn main() {
+    unsafe {
+        std::process::exit(main_0() as i32);
+    }
+}
+unsafe fn main_0() -> i32 {
+    let mut set: ::libc::fd_set = std::mem::zeroed::<::libc::fd_set>();
+    libc::FD_ZERO((&mut set as *mut ::libc::fd_set));
+    assert!(
+        ((!(libc::FD_ISSET(3, (&mut set as *mut ::libc::fd_set).cast_const()) as i32 != 0) as i32)
+            != 0)
+    );
+    libc::FD_SET(3, (&mut set as *mut ::libc::fd_set));
+    assert!((libc::FD_ISSET(3, (&mut set as *mut ::libc::fd_set).cast_const()) as i32 != 0));
+    libc::FD_CLR(3, (&mut set as *mut ::libc::fd_set));
+    assert!(
+        ((!(libc::FD_ISSET(3, (&mut set as *mut ::libc::fd_set).cast_const()) as i32 != 0) as i32)
+            != 0)
+    );
+    return 0;
+}