1// REQUIRES: sunrpc
2
3// RUN: %clangxx_msan -g -O0 %s -o %t && \
4// RUN: %run %t 2>&1
5// RUN: %clangxx_msan -g -O0 -DUNINIT=1 %s -o %t && \
6// RUN: not %run %t 2>&1 | FileCheck %s
7
8#include <assert.h>
9#include <string.h>
10#include <rpc/xdr.h>
11
12#include <sanitizer/msan_interface.h>
13
14int main(int argc, char *argv[]) {
15 XDR xdrs;
16 char buf[100];
17 xdrmem_create(&xdrs, buf, sizeof(buf), XDR_ENCODE);
18 char s[20];
19#ifndef UNINIT
20 strcpy(dest: s, src: "hello");
21#endif
22 char *sp = s;
23 unsigned sz = 6;
24 bool_t res = xdr_bytes(&xdrs, &sp, &sz, sizeof(s));
25 // CHECK: MemorySanitizer: use-of-uninitialized-value
26 // CHECK: {{in main.*sunrpc_bytes.cpp:}}[[@LINE-2]]
27 assert(res == TRUE);
28 xdr_destroy(&xdrs);
29
30 xdrmem_create(&xdrs, buf, sizeof(buf), XDR_DECODE);
31 char s2[20];
32 char *sp2 = s2;
33 unsigned sz2;
34 res = xdr_bytes(&xdrs, &sp2, &sz2, sizeof(s2));
35 assert(res == TRUE);
36 assert(sz == sz2);
37 assert(strcmp(s, s2) == 0);
38 xdr_destroy(&xdrs);
39 return 0;
40}
41

source code of compiler-rt/test/msan/Linux/sunrpc_bytes.cpp