Merge branch 'signal-structs' into 'master'

remove function struct export workarounds for signal header

See merge request redox-os/relibc!1315

src/header/signal/cbindgen.toml

@@ -40,6 +40,14 @@ cpp_compat = true
 [enum]
 prefix_with_name = true
 
+[export]
+include = [
+  "mcontext",
+  "sigevent",
+  "siginfo",
+  "ucontext"
+]
+
 [export.rename]
 "sigaction" = "struct sigaction"
 "timespec" = "struct timespec"

src/header/signal/mod.rs

@@ -110,9 +110,6 @@ pub struct siginfo {
     pub si_value: sigval,
 }
 
-#[unsafe(no_mangle)]
-pub extern "C" fn _cbindgen_export_siginfo(a: siginfo) {}
-
 /// See <https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/signal.h.html>.
 #[derive(Clone, Copy)]
 #[repr(C)]
@@ -595,6 +592,3 @@ pub unsafe extern "C" fn psiginfo(info: *const siginfo_t, prefix: *const c_char)
         psignal((*info).si_signo, prefix);
     }
 }
-
-#[unsafe(no_mangle)]
-pub unsafe extern "C" fn cbindgen_stupid_struct_sigevent_for_timer(_: sigevent) {}

src/header/signal/redox.rs

@@ -183,13 +183,6 @@ pub struct mcontext {
     _opaque: [c_uchar; 520],
 }
 
-#[unsafe(no_mangle)]
-pub extern "C" fn __completely_unused_cbindgen_workaround_fn_ucontext_mcontext(
-    a: *const ucontext_t,
-    b: *const mcontext_t,
-) {
-}
-
 impl From<SiginfoAbi> for siginfo_t {
     fn from(value: SiginfoAbi) -> Self {
         unsafe { core::mem::transmute(value) }