Allow new unpredictable_function_pointer_comparisons lints

These appeared in a recent nightly from our `PartialEq` derives. Add
`allow`s where needed to suppress them, since removing the derive would
be breaking.

Author: tgross35

src/fuchsia/mod.rs

@@ -292,6 +292,8 @@ s! {
         __dummy4: [c_char; 16],
     }
 
+    // FIXME(1.0): This should not implement `PartialEq`
+    #[allow(unpredictable_function_pointer_comparisons)]
     pub struct sigaction {
         pub sa_sigaction: crate::sighandler_t,
         pub sa_mask: crate::sigset_t,

src/unix/bsd/freebsdlike/dragonfly/mod.rs

@@ -520,6 +520,8 @@ s_no_extra_traits! {
         pub mc_fpregs: [c_uint; 256],
     }
 
+    // FIXME(1.0): This should not implement `PartialEq`
+    #[allow(unpredictable_function_pointer_comparisons)]
     pub struct ucontext_t {
         pub uc_sigmask: crate::sigset_t,
         pub uc_mcontext: mcontext_t,

src/unix/bsd/freebsdlike/freebsd/mod.rs

@@ -237,6 +237,8 @@ impl Clone for devstat_select_mode {
 }
 
 s! {
+    // FIXME(1.0): This should not implement `PartialEq`
+    #[allow(unpredictable_function_pointer_comparisons)]
     pub struct __c_anonymous_sigev_thread {
         pub _function: Option<extern "C" fn(crate::sigval) -> *mut c_void>,
         //pub _function: *mut c_void, // Actually a function pointer

src/unix/cygwin/mod.rs

@@ -351,6 +351,8 @@ s! {
         pub cr2: u64,
     }
 
+    // FIXME(1.0): This should not implement `PartialEq`
+    #[allow(unpredictable_function_pointer_comparisons)]
     pub struct sigevent {
         pub sigev_value: sigval,
         pub sigev_signo: c_int,

src/unix/haiku/native.rs

@@ -403,11 +403,14 @@ s! {
     }
 
     // kernel/image.h
+    // FIXME(1.0): This should not implement `PartialEq`
+    #[allow(unpredictable_function_pointer_comparisons)]
     pub struct image_info {
         pub id: image_id,
         pub image_type: c_int,
         pub sequence: i32,
         pub init_order: i32,
+        // FIXME(1.0): these should be made optional
         pub init_routine: extern "C" fn(),
         pub term_routine: extern "C" fn(),
         pub device: crate::dev_t,

src/unix/linux_like/android/b32/mod.rs

@@ -12,6 +12,8 @@ pub type __u64 = c_ulonglong;
 pub type __s64 = c_longlong;
 
 s! {
+    // FIXME(1.0): This should not implement `PartialEq`
+    #[allow(unpredictable_function_pointer_comparisons)]
     pub struct sigaction {
         pub sa_sigaction: crate::sighandler_t,
         pub sa_mask: crate::sigset_t,

src/unix/linux_like/android/b64/mod.rs

@@ -12,6 +12,8 @@ s! {
         __val: [c_ulong; 1],
     }
 
+    // FIXME(1.0): This should not implement `PartialEq`
+    #[allow(unpredictable_function_pointer_comparisons)]
     pub struct sigaction {
         pub sa_flags: c_int,
         pub sa_sigaction: crate::sighandler_t,

src/unix/linux_like/emscripten/mod.rs

@@ -158,6 +158,8 @@ s! {
         pub sem_flg: c_short,
     }
 
+    // FIXME(1.0): This should not implement `PartialEq`
+    #[allow(unpredictable_function_pointer_comparisons)]
     pub struct sigaction {
         pub sa_sigaction: crate::sighandler_t,
         pub sa_mask: crate::sigset_t,

src/unix/linux_like/linux/gnu/b32/arm/mod.rs

@@ -4,6 +4,8 @@ use crate::{off64_t, off_t};
 pub type wchar_t = u32;
 
 s! {
+    // FIXME(1.0): This should not implement `PartialEq`
+    #[allow(unpredictable_function_pointer_comparisons)]
     pub struct sigaction {
         pub sa_sigaction: crate::sighandler_t,
         pub sa_mask: crate::sigset_t,

src/unix/linux_like/linux/gnu/b32/csky/mod.rs

@@ -4,6 +4,8 @@ use crate::{off64_t, off_t};
 pub type wchar_t = u32;
 
 s! {
+    // FIXME(1.0): This should not implement `PartialEq`
+    #[allow(unpredictable_function_pointer_comparisons)]
     pub struct sigaction {
         pub sa_sigaction: crate::sighandler_t,
         pub sa_mask: crate::sigset_t,