Rollup merge of #79982 - ijackson:exit-status, r=dtolnay

Add missing methods to unix ExitStatusExt

These are the methods corresponding to the remaining exit status examination macros from `wait.h`.  `WCOREDUMP` isn't in SuS but is it is very standard.  I have not done portability testing to see if this builds everywhere, so I may need to Do Something if it doesn't.

There is also a bugfix and doc improvement to `.signal()`, and an `.into_raw()` accessor.

This would fix #73128 and fix #73129.  Please let me know if you like this direction, and if so I will open the tracking issue and so on.

If this MR goes well, I may tackle #73125 next - I have an idea for how to do it.

1 files changed, 17 insertions, 1 deletions

diff --git a/library/std/src/sys/unix/process/process_unix.rs b/library/std/src/sys/unix/process/process_unix.rs
index a590c744356..945b43678a9 100644
--- a/library/std/src/sys/unix/process/process_unix.rs
+++ b/library/std/src/sys/unix/process/process_unix.rs
@@ -479,7 +479,23 @@ impl ExitStatus {
     }
 
     pub fn signal(&self) -> Option<i32> {
-        if !self.exited() { Some(libc::WTERMSIG(self.0)) } else { None }
+        if libc::WIFSIGNALED(self.0) { Some(libc::WTERMSIG(self.0)) } else { None }
+    }
+
+    pub fn core_dumped(&self) -> bool {
+        libc::WIFSIGNALED(self.0) && libc::WCOREDUMP(self.0)
+    }
+
+    pub fn stopped_signal(&self) -> Option<i32> {
+        if libc::WIFSTOPPED(self.0) { Some(libc::WSTOPSIG(self.0)) } else { None }
+    }
+
+    pub fn continued(&self) -> bool {
+        libc::WIFCONTINUED(self.0)
+    }
+
+    pub fn into_raw(&self) -> c_int {
+        self.0
     }
 }