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-rw-r--r--elf/tst-thrlock.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/elf/tst-thrlock.c b/elf/tst-thrlock.c
new file mode 100644
index 0000000000..71f1fbb35d
--- /dev/null
+++ b/elf/tst-thrlock.c
@@ -0,0 +1,55 @@
+#include <dlfcn.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <gnu/lib-names.h>
+
+static void *
+tf (void *arg)
+{
+ void *h = dlopen (LIBM_SO, RTLD_LAZY);
+ if (h == NULL)
+ {
+ printf ("dlopen failed: %s\n", dlerror ());
+ exit (1);
+ }
+ if (dlsym (h, "sin") == NULL)
+ {
+ printf ("dlsym failed: %s\n", dlerror ());
+ exit (1);
+ }
+ if (dlclose (h) != 0)
+ {
+ printf ("dlclose failed: %s\n", dlerror ());
+ exit (1);
+ }
+ return NULL;
+}
+
+int
+main (void)
+{
+#define N 10
+ pthread_t th[N];
+ for (int i = 0; i < N; ++i)
+ {
+ int e = pthread_create (&th[i], NULL, tf, NULL);
+ if (e != 0)
+ {
+ printf ("pthread_create failed with %d (%s)\n", e, strerror (e));
+ return 1;
+ }
+ }
+ for (int i = 0; i < N; ++i)
+ {
+ void *res;
+ int e = pthread_join (th[i], &res);
+ if (e != 0 || res != NULL)
+ {
+ puts ("thread failed");
+ return 1;
+ }
+ }
+ return 0;
+}