writev test application. I expected this to crash haiku, but it hasn't

so far.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21828 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/tests/misc/Jamfile

@@ -3,5 +3,6 @@ SubDir HAIKU_TOP src tests misc ;
 SetSubDirSupportedPlatformsBeOSCompatible ;
 
 SimpleTest rtti-test : rtti-test.cpp : be ;
+SimpleTest writev-test : writev-test.cpp : be ;
 
 SubInclude HAIKU_TOP src tests misc exception-test ;

src/tests/misc/writev-test.cpp

@@ -0,0 +1,44 @@
+#include <sys/uio.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <fcntl.h>
+
+int 
+main()
+{
+	int fd = open("testfile", O_CREAT | O_RDWR, 0666);
+
+	if (fd < 0) {
+		printf("file open error %s\n", strerror(errno));
+		return 1;
+	}
+
+	int dummy;
+	int ret;
+	iovec vec1 = { &dummy, sizeof(dummy) };
+	ret = writev(fd, &vec1, 0x80000001);
+
+	if (ret < 0) {
+		printf("vec 1 write error %s\n", strerror(errno));
+	}
+
+	iovec vec2 = { (void *)0x80100000, 0x1000 };
+	ret = writev(fd, &vec2, 1);
+
+	if (ret < 0) {
+		printf("vec 2 write error %s\n", strerror(errno));
+	}
+
+	iovec vec3 = { 0, 1 };
+	ret = writev(fd, &vec3, 0xfff);
+
+	if (ret < 0) {
+		printf("vec 3 write error %s\n", strerror(errno));
+	}
+
+	close(fd);
+
+	return 0;
+}