1 files changed, 71 insertions, 0 deletions
diff --git a/regress/lib/libc/stdio_threading/fread/fread_test.c b/regress/lib/libc/stdio_threading/fread/fread_test.c
new file mode 100755
index 00000000000..b2372f5ab60
--- /dev/null
+++ b/regress/lib/libc/stdio_threading/fread/fread_test.c
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2008 Bret S. Lambert <blambert@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <pthread.h>
+#include "local.h"
+
+void
+fread_thread(void *v)
+{
+	char buf[sizeof(TEXT)];
+	FILE *file = v;
+	int i;
+
+	for (i = 0; i < 4096; i++) {
+		if (fread(buf, sizeof(char), strlen(TEXT), file) == 0) {
+
+			if (feof(file))
+				break;
+
+			printf("OMG!!!\n");
+			fflush(stdout);
+			break;
+		}
+		if (strncmp(buf, TEXT, sizeof(TEXT)))
+			err(1, "Read not atomic!!!");
+	}
+}
+
+int
+main(void)
+{
+	char sfn[24];
+	char buf[sizeof(TEXT)];
+	FILE *sfp;
+	int fd, i;
+
+	strlcpy(sfn, "/tmp/barnacles.XXXXXXXX", sizeof(sfn));
+	if ((fd = mkstemp(sfn)) == -1 ||
+	    (sfp = fdopen(fd, "w+")) == NULL) {
+		if (fd != -1) {
+			unlink(sfn);
+			close(fd);
+		}
+		err(1, "could not open temporary file");
+	}
+
+	for (i = 0; i < 4096 * THREAD_COUNT; i++)
+		if (fwrite(TEXT, sizeof(char), strlen(TEXT), sfp) == 0)
+			err(1, "Could not populate test file");
+
+	run_threads(fread_thread, sfp);
+
+	unlink(sfn);
+	close(fd);
+
+	exit(0);
+}