test-skeleton.c: Add write_message function

ChangeLog

@@ -1,3 +1,11 @@
+2016-06-22  Florian Weimer  <fweimer@redhat.com>
+
+	* test-skeleton.c (write_message): New function.
+	* malloc/tst-mallocfork2.c (write_message): Remove.
+	* debug/tst-longjmp_chk2.c (write_indented): New function.
+	(write_message): Remove.
+	(stackoverflow_handler): Call write_indented.
+
 2016-06-22  Joseph Myers  <joseph@codesourcery.com>
 
 	* sysdeps/i386/fpu/s_nearbyint.S (__nearbyint): Do not mask

debug/tst-longjmp_chk2.c

@@ -12,18 +12,20 @@
 #include <sys/resource.h>
 #include <unistd.h>
 
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
 
 static jmp_buf mainloop;
 static sigset_t mainsigset;
 static volatile sig_atomic_t pass;
 
 static void
-write_message (const char *message)
+write_indented (const char *str)
 {
-  ssize_t unused __attribute__ ((unused));
   for (int i = 0; i < pass; ++i)
-    unused = write (STDOUT_FILENO, " ", 1);
-  unused = write (STDOUT_FILENO, message, strlen (message));
+    write_message (" ");
+  write_message (str);
 }
 
 static void
@@ -33,11 +35,10 @@ stackoverflow_handler (int sig)
   /* Sanity check to keep test from looping forever (in case the longjmp
      chk code is slightly broken).  */
   pass++;
-  assert (pass < 5);
   sigaltstack (NULL, &altstack);
-  write_message ("in signal handler\n");
+  write_indented ("in signal handler\n");
   if (altstack.ss_flags & SS_ONSTACK)
-    write_message ("on alternate stack\n");
+    write_indented ("on alternate stack\n");
   siglongjmp (mainloop, pass);
 }
 
@@ -127,6 +128,3 @@ do_test (void)
 
   return 0;
 }
-
-#define TEST_FUNCTION do_test ()
-#include "../test-skeleton.c"

malloc/tst-mallocfork2.c

@@ -44,6 +44,9 @@ enum { malloc_maximum_size = 70000 };
 /* How many signals need to be delivered before the test exits.  */
 enum { signal_count = 1000 };
 
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
 
 /* Process ID of the subprocess which sends SIGUSR1 signals.  */
 static pid_t sigusr1_sender_pid;
@@ -56,14 +59,6 @@ static volatile sig_atomic_t sigusr1_received;
    progress.  Checked by liveness_signal_handler.  */
 static volatile sig_atomic_t progress_indicator = 1;
 
-/* Write the message to standard output.  Usable from signal
-   handlers.  */
-static void
-write_message (const char *str)
-{
-  write (STDOUT_FILENO, str, strlen (str));
-}
-
 static void
 sigusr1_handler (int signo)
 {
@@ -213,6 +208,3 @@ do_test (void)
 
   return 0;
 }
-
-#define TEST_FUNCTION do_test ()
-#include "../test-skeleton.c"

test-skeleton.c

@@ -115,6 +115,16 @@ xrealloc (void *p, size_t n)
   return p;
 }
 
+/* Write a message to standard output.  Can be used in signal
+   handlers.  */
+static void
+__attribute__ ((unused))
+write_message (const char *message)
+{
+  ssize_t unused __attribute__ ((unused));
+  unused = write (STDOUT_FILENO, message, strlen (message));
+}
+
 /* List of temporary files.  */
 struct temp_name_list
 {