test: Add testcase for #1112

Refs: #1112
Change-Id: I0041366d8dcf035a09fbb59a5dbd5c94cae0d65e

test/issues/1112/CT_002.c

@@ -0,0 +1,43 @@
+#define _GNU_SOURCE 1
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <errno.h>
+#include "./test_chk.h"
+
+#define TEST_NAME "CT_002"
+#define MAP_SIZE 0x2000000
+
+int main(int argc, char **argv)
+{
+	void *map, *remap;
+	int __errno;
+
+	printf("*** %s start *******************************\n", TEST_NAME);
+
+	map = mmap(0, MAP_SIZE, PROT_READ | PROT_WRITE,
+			MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+
+	OKNG(map == MAP_FAILED, "mmap   returned :%p", map);
+
+	errno = 0;
+	remap = mremap(map, MAP_SIZE, 0x800000, 0);
+	__errno = errno;
+
+	OKNG(remap != map, "mremap returned :%p"
+		" (expect return is %p)", remap, map);
+	OKNG(__errno != 0, "errno after mremap :%d"
+		" (expect error is 0)", __errno);
+
+	printf("*** %s PASSED\n\n", TEST_NAME);
+
+	return 0;
+
+fn_fail:
+	printf("*** %s FAILED\n\n", TEST_NAME);
+
+	return -1;
+}