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write-bad-ptr.c
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1/** Passes an invalid pointer to the write system call.
2 The process must be terminated with -1 exit code. */
3
4#include <syscall.h>
5#include "tests/lib.h"
6#include "tests/main.h"
7
8void
9test_main (void)
10{
11 int handle;
12 CHECK ((handle = open ("sample.txt")) > 1, "open \"sample.txt\"");
13
14 write (handle, (char *) 0x10123420, 123);
15 fail ("should have exited with -1");
16}
int open(const char *file)
Definition: syscall.c:103
int write(int fd, const void *buffer, unsigned size)
Definition: syscall.c:121
void fail(const char *format,...)
Definition: lib.c:40
#define CHECK(SUCCESS,...)
Takes an expression to test for SUCCESS and a message, which may include printf-style arguments.
Definition: lib.h:29
void test_main(void)
Passes an invalid pointer to the write system call.
Definition: write-bad-ptr.c:9