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| // RUN: %clang_analyze_cc1 -analyzer-checker=core,unix.Malloc -analyzer-store=region -verify -Wno-objc-root-class -fblocks %s
#include "Inputs/system-header-simulator-objc.h"
@class NSString;
typedef __typeof(sizeof(int)) size_t;
void *malloc(size_t);
void free(void *);
// RDar10579586 - Test use of malloc() with Objective-C string literal as a
// test condition. Not really a malloc() issue, but this also exercises
// the check that malloc() returns uninitialized memory.
@interface RDar10579586
struct rdar0579586_str {
char str_c;
};
@end
void rdar10579586(char x);
@implementation RDar10579586
+ (NSString *)foobar
{
struct rdar0579586_str *buffer = ((void*)0);
NSString *error = ((void*)0);
if ((buffer = malloc(sizeof(struct rdar0579586_str))) == ((void*)0))
error = @"buffer allocation failure";
if (error != ((void*)0))
return error;
rdar10579586(buffer->str_c); // expected-warning {{1st function call argument is an uninitialized value}}
free(buffer);
return ((void*)0);
}
@end
@interface MyArray : NSObject {
id * objects;
}
@end
void _ArrayCreate() {
MyArray *array = (MyArray *)malloc(12);
array = [array init];
free(array); // no-warning
}
void testNSDataTruePositiveLeak() {
char *b = (char *)malloc(12);
NSData *d = [[NSData alloc] initWithBytes: b length: 12]; // expected-warning {{Potential leak of memory pointed to by 'b'}}
}
id wrapInNSValue() {
void *buffer = malloc(4);
return [NSValue valueWithPointer:buffer]; // no-warning
} |