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 
14 int 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(s, "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