| 1 | // RUN: %clang_analyze_cc1 -analyzer-checker=core,unix.API -verify %s |
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| 2 | extern "C" { |
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| 3 | #ifndef O_RDONLY |
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| 4 | #define O_RDONLY 0 |
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| 5 | #endif |
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| 6 | |
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| 7 | #ifndef NULL |
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| 8 | #define NULL ((void*) 0) |
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| 9 | #endif |
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| 10 | |
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| 11 | int open(const char *, int, ...); |
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| 12 | int close(int fildes); |
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| 13 | |
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| 14 | } // extern "C" |
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| 15 | |
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| 16 | namespace MyNameSpace { |
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| 17 | int open(const char *a, int b, int c, int d); |
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| 18 | } |
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| 19 | |
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| 20 | void unix_open(const char *path) { |
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| 21 | int fd; |
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| 22 | fd = open(path, O_RDONLY); // no-warning |
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| 23 | if (fd > -1) |
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| 24 | close(fd); |
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| 25 | } |
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| 26 | |
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| 27 | void unix_open_misuse(const char *path) { |
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| 28 | int fd; |
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| 29 | int mode = 0x0; |
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| 30 | fd = open(path, O_RDONLY, mode, NULL); // expected-warning{{Call to 'open' with more than 3 arguments}} |
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| 31 | if (fd > -1) |
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| 32 | close(fd); |
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| 33 | } |
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| 34 | |
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| 35 | // Don't treat open() in namespaces as the POSIX open() |
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| 36 | void namespaced_open(const char *path) { |
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| 37 | MyNameSpace::open("Hi", 2, 3, 4); // no-warning |
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| 38 | |
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| 39 | using namespace MyNameSpace; |
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| 40 | |
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| 41 | open("Hi", 2, 3, 4); // no-warning |
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| 42 | |
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| 43 | int fd; |
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| 44 | int mode = 0x0; |
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| 45 | fd = ::open(path, O_RDONLY, mode, NULL); // expected-warning{{Call to 'open' with more than 3 arguments}} |
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| 46 | if (fd > -1) |
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| 47 | close(fd); |
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| 48 | } |
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| 49 | |
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| 50 | class MyClass { |
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| 51 | public: |
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| 52 | static int open(const char *a, int b, int c, int d); |
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| 53 | |
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| 54 | int open(int a, int, int c, int d); |
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| 55 | }; |
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| 56 | |
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| 57 | void class_qualified_open() { |
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| 58 | MyClass::open("Hi", 2, 3, 4); // no-warning |
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| 59 | |
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| 60 | MyClass mc; |
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| 61 | mc.open(1, 2, 3, 4); // no-warning |
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| 62 | } |
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| 63 | |
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