--- /dev/null
+#include "ntdb-source.h"
+/* We had a bug where we marked the ntdb read-only for a ntdb_traverse_read.
+ * If we then expanded the ntdb, we would remap read-only, and later SEGV. */
+#include "tap-interface.h"
+#include "external-agent.h"
+#include "logging.h"
+
+static bool file_larger(int fd, ntdb_len_t size)
+{
+ struct stat st;
+
+ fstat(fd, &st);
+ return st.st_size != size;
+}
+
+static unsigned add_records_to_grow(struct agent *agent, int fd, ntdb_len_t size)
+{
+ unsigned int i;
+
+ for (i = 0; !file_larger(fd, size); i++) {
+ char data[50];
+ sprintf(data, "%i=%i", i, i);
+ if (external_agent_operation(agent, STORE, data) != SUCCESS)
+ return 0;
+ }
+ diag("Added %u records to grow file", i);
+ return i;
+}
+
+int main(int argc, char *argv[])
+{
+ unsigned int i;
+ struct agent *agent;
+ struct ntdb_context *ntdb;
+ NTDB_DATA d = ntdb_mkdata("hello", 5);
+ const char filename[] = "run-remap-in-read_traverse.ntdb";
+
+ plan_tests(4);
+
+ agent = prepare_external_agent();
+
+ ntdb = ntdb_open(filename, MAYBE_NOSYNC,
+ O_RDWR|O_CREAT|O_TRUNC, 0600, &tap_log_attr);
+
+ ok1(external_agent_operation(agent, OPEN, filename) == SUCCESS);
+ i = add_records_to_grow(agent, ntdb->file->fd, ntdb->file->map_size);
+
+ /* Do a traverse. */
+ ok1(ntdb_traverse(ntdb, NULL, NULL) == i);
+
+ /* Now store something! */
+ ok1(ntdb_store(ntdb, d, d, NTDB_INSERT) == 0);
+ ok1(tap_log_messages == 0);
+ ntdb_close(ntdb);
+ free_external_agent(agent);
+ return exit_status();
+}