| 1 | // RUN: %clang_analyze_cc1 -analyzer-checker=core,unix.Malloc -analyzer-store=region -verify -Wno-objc-root-class -fblocks %s |
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| 2 | #include "Inputs/system-header-simulator-objc.h" |
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| 3 | |
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| 4 | @class NSString; |
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| 5 | typedef __typeof(sizeof(int)) size_t; |
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| 6 | void *malloc(size_t); |
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| 7 | void free(void *); |
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| 8 | |
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| 9 | // RDar10579586 - Test use of malloc() with Objective-C string literal as a |
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| 10 | // test condition. Not really a malloc() issue, but this also exercises |
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| 11 | // the check that malloc() returns uninitialized memory. |
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| 12 | @interface RDar10579586 |
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| 13 | struct rdar0579586_str { |
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| 14 | char str_c; |
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| 15 | }; |
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| 16 | @end |
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| 17 | |
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| 18 | void rdar10579586(char x); |
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| 19 | |
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| 20 | @implementation RDar10579586 |
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| 21 | + (NSString *)foobar |
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| 22 | { |
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| 23 | struct rdar0579586_str *buffer = ((void*)0); |
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| 24 | NSString *error = ((void*)0); |
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| 25 | |
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| 26 | if ((buffer = malloc(sizeof(struct rdar0579586_str))) == ((void*)0)) |
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| 27 | error = @"buffer allocation failure"; |
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| 28 | |
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| 29 | if (error != ((void*)0)) |
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| 30 | return error; |
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| 31 | |
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| 32 | rdar10579586(buffer->str_c); // expected-warning {{1st function call argument is an uninitialized value}} |
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| 33 | free(buffer); |
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| 34 | return ((void*)0); |
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| 35 | } |
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| 36 | @end |
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| 37 | |
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| 38 | @interface MyArray : NSObject { |
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| 39 | id * objects; |
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| 40 | } |
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| 41 | @end |
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| 42 | |
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| 43 | void _ArrayCreate() { |
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| 44 | MyArray *array = (MyArray *)malloc(12); |
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| 45 | array = [array init]; |
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| 46 | free(array); // no-warning |
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| 47 | } |
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| 48 | |
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| 49 | void testNSDataTruePositiveLeak() { |
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| 50 | char *b = (char *)malloc(12); |
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| 51 | NSData *d = [[NSData alloc] initWithBytes: b length: 12]; // expected-warning {{Potential leak of memory pointed to by 'b'}} |
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| 52 | } |
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| 53 | |
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| 54 | id wrapInNSValue() { |
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| 55 | void *buffer = malloc(4); |
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| 56 | return [NSValue valueWithPointer:buffer]; // no-warning |
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| 57 | } |
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