llvm-capstone/clang/test/Analysis/Checkers/RunLoopAutoreleaseLeakChecker.m
Artem Dergachev e9f1edaae1 [analyzer] RunLoopAutoreleaseLeakChecker: Come up with a test for r348822.
Statement memoization was removed in r348822 because it was noticed to cause
memory corruption. This was happening because a reference to an object
in a DenseMap was used after being invalidated by inserting a new key
into the map.

This test case crashes reliably under ASan (i.e., when Clang is built with
-DLLVM_USE_SANITIZER="Address") on at least some machines before r348822
and doesn't crash after it.

llvm-svn: 349000
2018-12-13 01:30:47 +00:00

162 lines
5.6 KiB
Objective-C

// RUN: %clang_analyze_cc1 -fobjc-arc -triple x86_64-darwin\
// RUN: -analyzer-checker=core,osx.cocoa.RunLoopAutoreleaseLeak -verify %s
// RUN: %clang_analyze_cc1 -DEXTRA=1 -DAP1=1 -fobjc-arc -triple x86_64-darwin\
// RUN: -analyzer-checker=core,osx.cocoa.RunLoopAutoreleaseLeak -verify %s
// RUN: %clang_analyze_cc1 -DEXTRA=1 -DAP2=1 -fobjc-arc -triple x86_64-darwin\
// RUN: -analyzer-checker=core,osx.cocoa.RunLoopAutoreleaseLeak -verify %s
// RUN: %clang_analyze_cc1 -DEXTRA=1 -DAP3=1 -fobjc-arc -triple x86_64-darwin\
// RUN: -analyzer-checker=core,osx.cocoa.RunLoopAutoreleaseLeak -verify %s
// RUN: %clang_analyze_cc1 -DEXTRA=1 -DAP4=1 -fobjc-arc -triple x86_64-darwin\
// RUN: -analyzer-checker=core,osx.cocoa.RunLoopAutoreleaseLeak -verify %s
// RUN: %clang_analyze_cc1 -DEXTRA=1 -DAP5=1 -fobjc-arc -triple x86_64-darwin\
// RUN: -analyzer-checker=core,osx.cocoa.RunLoopAutoreleaseLeak -verify %s
#include "../Inputs/system-header-simulator-for-objc-dealloc.h"
#ifndef EXTRA
void just_runloop() { // No warning: no statements in between
@autoreleasepool {
[[NSRunLoop mainRunLoop] run]; // no-warning
}
}
void just_xpcmain() { // No warning: no statements in between
@autoreleasepool {
xpc_main(); // no-warning
}
}
void runloop_init_before() { // Warning: object created before the loop.
@autoreleasepool {
NSObject *object = [[NSObject alloc] init]; // expected-warning{{Temporary objects allocated in the autorelease pool followed by the launch of main run loop may never get released; consider moving them to a separate autorelease pool}}
(void) object;
[[NSRunLoop mainRunLoop] run];
}
}
void runloop_init_before_separate_pool() { // No warning: separate autorelease pool.
@autoreleasepool {
NSObject *object;
@autoreleasepool {
object = [[NSObject alloc] init]; // no-warning
}
(void) object;
[[NSRunLoop mainRunLoop] run];
}
}
void xpcmain_init_before() { // Warning: object created before the loop.
@autoreleasepool {
NSObject *object = [[NSObject alloc] init]; // expected-warning{{Temporary objects allocated in the autorelease pool followed by the launch of xpc_main may never get released; consider moving them to a separate autorelease pool}}
(void) object;
xpc_main();
}
}
void runloop_init_before_two_objects() { // Warning: object created before the loop.
@autoreleasepool {
NSObject *object = [[NSObject alloc] init]; // expected-warning{{Temporary objects allocated in the autorelease pool followed by the launch of main run loop may never get released; consider moving them to a separate autorelease pool}}
NSObject *object2 = [[NSObject alloc] init]; // no-warning, warning on the first one is enough.
(void) object;
(void) object2;
[[NSRunLoop mainRunLoop] run];
}
}
void runloop_no_autoreleasepool() {
NSObject *object = [[NSObject alloc] init]; // no-warning
(void)object;
[[NSRunLoop mainRunLoop] run];
}
void runloop_init_after() { // No warning: objects created after the loop
@autoreleasepool {
[[NSRunLoop mainRunLoop] run];
NSObject *object = [[NSObject alloc] init]; // no-warning
(void) object;
}
}
void no_crash_on_empty_children() {
@autoreleasepool {
for (;;) {}
NSObject *object = [[NSObject alloc] init]; // expected-warning{{Temporary objects allocated in the autorelease pool followed by the launch of main run loop may never get released; consider moving them to a separate autorelease pool}}
[[NSRunLoop mainRunLoop] run];
(void) object;
}
}
#endif
#ifdef AP1
int main() {
NSObject *object = [[NSObject alloc] init]; // expected-warning{{Temporary objects allocated in the autorelease pool of last resort followed by the launch of main run loop may never get released; consider moving them to a separate autorelease pool}}
(void) object;
[[NSRunLoop mainRunLoop] run];
return 0;
}
#endif
#ifdef AP2
// expected-no-diagnostics
int main() {
NSObject *object = [[NSObject alloc] init]; // no-warning
(void) object;
@autoreleasepool {
[[NSRunLoop mainRunLoop] run];
}
return 0;
}
#endif
#ifdef AP3
// expected-no-diagnostics
int main() {
[[NSRunLoop mainRunLoop] run];
NSObject *object = [[NSObject alloc] init]; // no-warning
(void) object;
return 0;
}
#endif
#ifdef AP4
int main() {
NSObject *object = [[NSObject alloc] init]; // expected-warning{{Temporary objects allocated in the autorelease pool of last resort followed by the launch of xpc_main may never get released; consider moving them to a separate autorelease pool}}
(void) object;
xpc_main();
return 0;
}
#endif
#ifdef AP5
@class NSString;
@class NSConstantString;
#define CF_BRIDGED_TYPE(T) __attribute__((objc_bridge(T)))
typedef const CF_BRIDGED_TYPE(id) void * CFTypeRef;
typedef const struct CF_BRIDGED_TYPE(NSString) __CFString * CFStringRef;
typedef enum { WARNING } Level;
id do_log(Level, const char *);
#define log(level, msg) __extension__({ (do_log(level, msg)); })
@interface I
- foo;
@end
CFStringRef processString(const __NSConstantString *, void *);
#define CFSTR __builtin___CFStringMakeConstantString
int main() {
I *i;
@autoreleasepool {
NSString *s1 = (__bridge_transfer NSString *)processString(0, 0);
NSString *s2 = (__bridge_transfer NSString *)processString((CFSTR("")), ((void *)0));
log(WARNING, "Hello world!");
}
[[NSRunLoop mainRunLoop] run];
[i foo]; // no-crash // expected-warning{{Temporary objects allocated in the autorelease pool of last resort followed by the launch of main run loop may never get released; consider moving them to a separate autorelease pool}}
}
#endif