clang/test/Analysis/unix-api.cpp

   1 // RUN: %clang_analyze_cc1 -analyzer-checker=core,unix.API -verify %s
   2 extern "C" {
   3 #ifndef O_RDONLY
   4 #define O_RDONLY 0
   5 #endif
   6
   7 #ifndef NULL
   8 #define NULL ((void*) 0)
   9 #endif
  10
  11 int open(const char *, int, ...);
  12 int close(int fildes);
  13
  14 } // extern "C"
  15
  16 namespace MyNameSpace {
  17 int open(const char *a, int b, int c, int d);
  18 }
  19
  20 void unix_open(const char *path) {
  21   int fd;
  22   fd = open(path, O_RDONLY); // no-warning
  23   if (fd > -1)
  24     close(fd);
  25 }
  26
  27 void unix_open_misuse(const char *path) {
  28   int fd;
  29   int mode = 0x0;
  30   fd = open(path, O_RDONLY, mode, NULL); // expected-warning{{Call to 'open' with more than 3 arguments}}
  31   if (fd > -1)
  32     close(fd);
  33 }
  34
  35 // Don't treat open() in namespaces as the POSIX open()
  36 void namespaced_open(const char *path) {
  37   MyNameSpace::open("Hi", 2, 3, 4); // no-warning
  38
  39   using namespace MyNameSpace;
  40
  41   open("Hi", 2, 3, 4); // no-warning
  42
  43   int fd;
  44   int mode = 0x0;
  45   fd = ::open(path, O_RDONLY, mode, NULL); // expected-warning{{Call to 'open' with more than 3 arguments}}
  46   if (fd > -1)
  47     close(fd);
  48 }
  49
  50 class MyClass {
  51 public:
  52   static int open(const char *a, int b, int c, int d);
  53
  54   int open(int a, int, int c, int d);
  55 };
  56
  57 void class_qualified_open() {
  58   MyClass::open("Hi", 2, 3, 4); // no-warning
  59
  60   MyClass mc;
  61   mc.open(1, 2, 3, 4); // no-warning
  62 }