1 files changed, 4 insertions, 1 deletions
diff --git a/posix/fork.c b/posix/fork.c
index 940d6a0955..c471f7b15f 100644
--- a/posix/fork.c
+++ b/posix/fork.c
@@ -41,7 +41,10 @@ __libc_fork (void)
 {
   /* Determine if we are running multiple threads.  We skip some fork
      handlers in the single-thread case, to make fork safer to use in
-     signal handlers.  */
+     signal handlers.  Although POSIX has dropped async-signal-safe
+     requirement for fork (Austin Group tracker issue #62) this is
+     best effort to make is async-signal-safe at least for single-thread
+     case.  */
   bool multiple_threads = __libc_single_threaded == 0;
 
   __run_fork_handlers (atfork_run_prepare, multiple_threads);