cling/test/NullDeref/NonNullArg.C

//------------------------------------------------------------------------------
// CLING - the C++ LLVM-based InterpreterG :)
//
// This file is dual-licensed: you can choose to license it under the University
// of Illinois Open Source License or the GNU Lesser General Public License. See
// LICENSE.TXT for details.
//------------------------------------------------------------------------------

// RUN: cat %s | %cling -Xclang -verify | FileCheck %s
//This file checks a call instruction. The called function has arguments with nonnull attribute.
#include <string.h>
// XFAIL: darwin

char *p = 0;
strcmp("a", p); // expected-warning {{null passed to a callee which requires a non-null argument}}

strcmp(p, "a"); // expected-warning {{null passed to a callee which requires a non-null argument}}

extern "C" int printf(const char* fmt, ...);
.rawInput 1
extern "C" int cannotCallWithNull(int* p = 0);
extern "C" int cannotCallWithNull(int* p) __attribute__((nonnull(1)));
extern "C" int cannotCallWithNull(int* p);
extern "C" int cannotCallWithNull(int* p);
.rawInput 0

extern "C" int cannotCallWithNull(int* p) {
  if (!p)
    printf("Must not be called with p=0.\n");
  return 1;
}
int *q = 0;
cannotCallWithNull(q); // expected-warning {{null passed to a callee which requires a non-null argument}}
//CHECK-NOT: Must not be called with p=0.
cannotCallWithNull(new int(4))
//CHECK: (int) 1



.q