1 files changed, 60 insertions, 0 deletions
diff --git a/tests/bugs/core/bug-834465.c b/tests/bugs/core/bug-834465.c
new file mode 100644
index 00000000000..33dd270b112
--- /dev/null
+++ b/tests/bugs/core/bug-834465.c
@@ -0,0 +1,60 @@
+#include <sys/file.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+int
+main(int argc, char *argv[])
+{
+    int fd = -1;
+    char *filename = NULL;
+    struct flock lock = {
+        0,
+    };
+    int i = 0;
+    int ret = -1;
+
+    if (argc != 2) {
+        fprintf(stderr, "Usage: %s <filename> ", argv[0]);
+        goto out;
+    }
+
+    filename = argv[1];
+
+    fd = open(filename, O_RDWR | O_CREAT, 0);
+    if (fd < 0) {
+        fprintf(stderr, "open (%s) failed (%s)\n", filename, strerror(errno));
+        goto out;
+    }
+
+    lock.l_type = F_WRLCK;
+    lock.l_whence = SEEK_SET;
+    lock.l_start = 1;
+    lock.l_len = 1;
+
+    while (i < 100) {
+        lock.l_type = F_WRLCK;
+        ret = fcntl(fd, F_SETLK, &lock);
+        if (ret < 0) {
+            fprintf(stderr, "fcntl setlk failed (%s)\n", strerror(errno));
+            goto out;
+        }
+
+        lock.l_type = F_UNLCK;
+        ret = fcntl(fd, F_SETLK, &lock);
+        if (ret < 0) {
+            fprintf(stderr, "fcntl setlk failed (%s)\n", strerror(errno));
+            goto out;
+        }
+
+        i++;
+    }
+
+    ret = 0;
+
+out:
+    return ret;
+}