gh-89414: Document that SIGCLD is not available on macOS (#113580)

Document that SIGCLD is not available on macOS

diff --git a/Doc/library/signal.rst b/Doc/library/signal.rst
index 7ee5ece885982509c5d4ab279a32cbbd39e07b62..85a073aad233ace7321d26c753b781429fa234d4 100644 (file)
--- a/Doc/library/signal.rst
+++ b/Doc/library/signal.rst
@@ -157,6 +157,8 @@ The variables defined in the :mod:`signal` module are:
 
    Alias to :data:`SIGCHLD`.
 
+   .. availability:: not macOS.
+
 .. data:: SIGCONT
 
    Continue the process if it is currently stopped