Anna Zaks | aca0ac5 | 2012-05-03 23:50:28 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -analyze -analyzer-checker=core,unix.Malloc -analyzer-store=region -verify -Wno-objc-root-class -fblocks %s |
Chandler Carruth | 1b22cec | 2012-09-12 01:11:10 +0000 | [diff] [blame] | 2 | #include "Inputs/system-header-simulator-objc.h" |
Ted Kremenek | 4c62b55 | 2012-02-28 00:56:05 +0000 | [diff] [blame] | 3 | |
| 4 | @class NSString; |
| 5 | typedef __typeof(sizeof(int)) size_t; |
| 6 | void *malloc(size_t); |
| 7 | void free(void *); |
| 8 | |
| 9 | // RDar10579586 - Test use of malloc() with Objective-C string literal as a |
| 10 | // test condition. Not really a malloc() issue, but this also exercises |
| 11 | // the check that malloc() returns uninitialized memory. |
| 12 | @interface RDar10579586 |
| 13 | struct rdar0579586_str { |
| 14 | char str_c; |
| 15 | }; |
| 16 | @end |
| 17 | |
| 18 | void rdar10579586(char x); |
| 19 | |
| 20 | @implementation RDar10579586 |
| 21 | + (NSString *)foobar |
| 22 | { |
| 23 | struct rdar0579586_str *buffer = ((void*)0); |
| 24 | NSString *error = ((void*)0); |
| 25 | |
| 26 | if ((buffer = malloc(sizeof(struct rdar0579586_str))) == ((void*)0)) |
| 27 | error = @"buffer allocation failure"; |
| 28 | |
| 29 | if (error != ((void*)0)) |
| 30 | return error; |
| 31 | |
| 32 | rdar10579586(buffer->str_c); // expected-warning {{Function call argument is an uninitialized value}} |
| 33 | free(buffer); |
| 34 | return ((void*)0); |
| 35 | } |
| 36 | @end |
| 37 | |
Anna Zaks | e7a5c82 | 2013-05-31 23:47:32 +0000 | [diff] [blame] | 38 | @interface MyArray : NSObject { |
Anna Zaks | ee1af23 | 2013-05-31 22:39:13 +0000 | [diff] [blame] | 39 | id * objects; |
| 40 | } |
| 41 | @end |
| 42 | |
Anna Zaks | e7a5c82 | 2013-05-31 23:47:32 +0000 | [diff] [blame] | 43 | void _ArrayCreate() { |
| 44 | MyArray *array = (MyArray *)malloc(12); |
Anna Zaks | ee1af23 | 2013-05-31 22:39:13 +0000 | [diff] [blame] | 45 | array = [array init]; |
| 46 | free(array); // no-warning |
Anna Zaks | e7a5c82 | 2013-05-31 23:47:32 +0000 | [diff] [blame] | 47 | } |
| 48 | |
| 49 | void testNSDataTruePositiveLeak() { |
| 50 | char *b = (char *)malloc(12); |
| 51 | NSData *d = [[NSData alloc] initWithBytes: b length: 12]; // expected-warning {{Potential leak of memory pointed to by 'b'}} |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 52 | } |
| 53 | |
| 54 | id wrapInNSValue() { |
| 55 | void *buffer = malloc(4); |
| 56 | return [NSValue valueWithPointer:buffer]; // no-warning |
Anna Zaks | ee1af23 | 2013-05-31 22:39:13 +0000 | [diff] [blame] | 57 | } |