| 1 | // RUN: %clang_analyze_cc1 -fblocks -verify %s -analyzer-store=region \ |
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| 2 | // RUN: -analyzer-checker=core \ |
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| 3 | // RUN: -analyzer-checker=unix.Malloc |
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| 4 | // |
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| 5 | // RUN: %clang_analyze_cc1 -fblocks -verify %s -analyzer-store=region \ |
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| 6 | // RUN: -analyzer-checker=core \ |
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| 7 | // RUN: -analyzer-checker=unix.Malloc \ |
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| 8 | // RUN: -analyzer-config unix.DynamicMemoryModeling:Optimistic=true |
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| 9 | typedef __typeof(sizeof(int)) size_t; |
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| 10 | void free(void *); |
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| 11 | void *alloca(size_t); |
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| 12 | |
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| 13 | void t1 () { |
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| 14 | int a[] = { 1 }; |
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| 15 | free(a); // expected-warning {{Argument to free() is the address of the local variable 'a', which is not memory allocated by malloc()}} |
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| 16 | } |
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| 17 | |
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| 18 | void t2 () { |
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| 19 | int a = 1; |
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| 20 | free(&a); // expected-warning {{Argument to free() is the address of the local variable 'a', which is not memory allocated by malloc()}} |
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| 21 | } |
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| 22 | |
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| 23 | void t3 () { |
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| 24 | static int a[] = { 1 }; |
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| 25 | free(a); // expected-warning {{Argument to free() is the address of the static variable 'a', which is not memory allocated by malloc()}} |
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| 26 | } |
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| 27 | |
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| 28 | void t4 (char *x) { |
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| 29 | free(x); // no-warning |
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| 30 | } |
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| 31 | |
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| 32 | void t5 () { |
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| 33 | extern char *ptr(); |
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| 34 | free(ptr()); // no-warning |
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| 35 | } |
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| 36 | |
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| 37 | void t6 () { |
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| 38 | free((void*)1000); // expected-warning {{Argument to free() is a constant address (1000), which is not memory allocated by malloc()}} |
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| 39 | } |
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| 40 | |
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| 41 | void t7 (char **x) { |
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| 42 | free(*x); // no-warning |
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| 43 | } |
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| 44 | |
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| 45 | void t8 (char **x) { |
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| 46 | // ugh |
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| 47 | free((*x)+8); // no-warning |
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| 48 | } |
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| 49 | |
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| 50 | void t9 () { |
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| 51 | label: |
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| 52 | free(&&label); // expected-warning {{Argument to free() is the address of the label 'label', which is not memory allocated by malloc()}} |
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| 53 | } |
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| 54 | |
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| 55 | void t10 () { |
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| 56 | free((void*)&t10); // expected-warning {{Argument to free() is the address of the function 't10', which is not memory allocated by malloc()}} |
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| 57 | } |
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| 58 | |
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| 59 | void t11 () { |
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| 60 | char *p = (char*)alloca(2); |
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| 61 | free(p); // expected-warning {{Memory allocated by alloca() should not be deallocated}} |
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| 62 | } |
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| 63 | |
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| 64 | void t12 () { |
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| 65 | char *p = (char*)__builtin_alloca(2); |
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| 66 | free(p); // expected-warning {{Memory allocated by alloca() should not be deallocated}} |
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| 67 | } |
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| 68 | |
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| 69 | void t13 () { |
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| 70 | free(^{return;}); // expected-warning {{Argument to free() is a block, which is not memory allocated by malloc()}} |
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| 71 | } |
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| 72 | |
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| 73 | void t14 (char a) { |
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| 74 | free(&a); // expected-warning {{Argument to free() is the address of the parameter 'a', which is not memory allocated by malloc()}} |
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| 75 | } |
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| 76 | |
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| 77 | static int someGlobal[2]; |
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| 78 | void t15 () { |
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| 79 | free(someGlobal); // expected-warning {{Argument to free() is the address of the global variable 'someGlobal', which is not memory allocated by malloc()}} |
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| 80 | } |
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| 81 | |
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| 82 | void t16 (char **x, int offset) { |
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| 83 | // Unknown value |
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| 84 | free(x[offset]); // no-warning |
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| 85 | } |
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| 86 | |
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