[newlib-cygwin/main] Cygwin: remove warnings from testsuite build

[Corinna Vinschen <corinna@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=3f2d03a78014a7351ccce1732d9d9a3a45637584

commit 3f2d03a78014a7351ccce1732d9d9a3a45637584
Author:     Corinna Vinschen <corinna@vinschen.de>
AuthorDate: Fri Jan 19 15:11:32 2024 +0100
Commit:     Corinna Vinschen <corinna@vinschen.de>
CommitDate: Fri Jan 19 15:11:32 2024 +0100

    Cygwin: remove warnings from testsuite build
    
    - drop unused variable
    - remove deprectated usage of std::pointer_to_unary_function.
    
    Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

Diff:
---
 winsup/testsuite/cygrun.c              | 1 -
 winsup/testsuite/winsup.api/cygload.cc | 9 +++------
 winsup/testsuite/winsup.api/cygload.h  | 2 +-
 3 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/winsup/testsuite/cygrun.c b/winsup/testsuite/cygrun.c
index 450201342afd..50c51876ed31 100644
--- a/winsup/testsuite/cygrun.c
+++ b/winsup/testsuite/cygrun.c
@@ -22,7 +22,6 @@ main (int argc, char **argv)
   PROCESS_INFORMATION pi;
   DWORD res;
   DWORD ec = 1;
-  char *p;
   DWORD timeout = 60 * 1000;
 
   if (argc < 2)
diff --git a/winsup/testsuite/winsup.api/cygload.cc b/winsup/testsuite/winsup.api/cygload.cc
index f5ca8db9a181..afd3ee90fc7c 100644
--- a/winsup/testsuite/winsup.api/cygload.cc
+++ b/winsup/testsuite/winsup.api/cygload.cc
@@ -597,12 +597,9 @@ main (int argc, char *argv[])
     }
 
     // And signal handling:
-    std::pointer_to_unary_function < int , void > h1 (&hangup);
-    std::pointer_to_unary_function < int , void > h2 (&interrupt);
-    std::pointer_to_unary_function < int , void > h3 (&catch_signal);
-    cygwin.set_handler (SIGHUP, &h1);
-    cygwin.set_handler (SIGINT, &h2);
-    cygwin.set_handler (SIGUSR1, &h3);
+    cygwin.set_handler (SIGHUP, hangup);
+    cygwin.set_handler (SIGINT, interrupt);
+    cygwin.set_handler (SIGUSR1, catch_signal);
 
     // Make sure the signal handler thread has had time to start...
     Sleep (100);
diff --git a/winsup/testsuite/winsup.api/cygload.h b/winsup/testsuite/winsup.api/cygload.h
index 8007fd59326d..30154048b0a5 100644
--- a/winsup/testsuite/winsup.api/cygload.h
+++ b/winsup/testsuite/winsup.api/cygload.h
@@ -102,7 +102,7 @@ namespace cygwin
   public:
     // The constructor will automatically hook you up for receiving
     // cygwin signals.  Just specify a signal and pass in a signal_handler.
-    typedef std::pointer_to_unary_function<int,void> signal_handler;
+    typedef void signal_handler (int);
     signal_handler *set_handler (int signal, signal_handler *);
 
   private: