Re: RFA: v3 PATCH to add on_quick_exit/quick_exit to std

[Jason Merrill <jason at redhat dot com>]

On 02/14/2013 02:16 PM, Paolo Carlini wrote:
> ... or the below, just in case an interesting system provides the
> *quick_exit functions but doesn't define _GLIBCXX_USE_C99.

It seems rather unlikely that the system would provide some C11 
functions without the corresponding C99 ones.  I'm just going to #if out 
the whole test if the relevant functions aren't available:


commit e203f2dcdf077fcf61b4d6b3f8e399c25cc44dfb
Author: Jason Merrill <jason@redhat.com>
Date:   Thu Feb 14 11:15:28 2013 -0500

    	* testsuite/18_support/quick_exit/quick_exit.cc: #if out the whole
    	test if unsupported.

diff --git a/libstdc++-v3/testsuite/18_support/quick_exit/quick_exit.cc b/libstdc++-v3/testsuite/18_support/quick_exit/quick_exit.cc
index 8e55890..b91cbe2 100644
--- a/libstdc++-v3/testsuite/18_support/quick_exit/quick_exit.cc
+++ b/libstdc++-v3/testsuite/18_support/quick_exit/quick_exit.cc
@@ -21,6 +21,7 @@
 
 // 18.5 - Start and termination
 
+#if defined(_GLIBCXX_HAVE_AT_QUICK_EXIT) && defined(_GLIBCXX_HAVE_QUICK_EXIT)
 #include <cstdlib>
 
 void handler()
@@ -35,9 +36,10 @@ void wrong_handler()
 
 int main()
 {
-#if defined(_GLIBCXX_HAVE_AT_QUICK_EXIT) && defined(_GLIBCXX_HAVE_QUICK_EXIT)
   std::at_quick_exit (handler);
   std::atexit (wrong_handler);
   std::quick_exit (1);
+}
+#else
+int main() {}
 #endif
-}