// RUN: %clangxx_msan -g -O0 %s -o %t && \ // RUN: %run %t 2>&1 // RUN: %clangxx_msan -g -O0 -DUNINIT=1 %s -o %t && \ // RUN: not %run %t 2>&1 | FileCheck %s #include <assert.h> #include <string.h> #include <rpc/xdr.h> #include <sanitizer/msan_interface.h> int main(int argc, char *argv[]) { XDR xdrs; char buf[100]; xdrmem_create(&xdrs, buf, sizeof(buf), XDR_ENCODE); char s[20]; #ifndef UNINIT strcpy(s, "hello"); #endif char *sp = s; bool_t res = xdr_string(&xdrs, &sp, sizeof(s)); // CHECK: MemorySanitizer: use-of-uninitialized-value // CHECK: {{in main.*sunrpc_string.cc:}}[[@LINE-2]] assert(res == TRUE); xdr_destroy(&xdrs); xdrmem_create(&xdrs, buf, sizeof(buf), XDR_DECODE); char s2[20]; char *sp2 = s2; res = xdr_string(&xdrs, &sp2, sizeof(s2)); assert(res == TRUE); assert(strcmp(s, s2) == 0); xdr_destroy(&xdrs); return 0; }