ObjFW  Check-in [10977992a8]

extern struct objc_class _NSConcreteMallocBlock;
#elif defined(OF_APPLE_RUNTIME)
extern void *_NSConcreteStackBlock;
extern void *_NSConcreteGlobalBlock;
extern void *_NSConcreteMallocBlock;
#endif

/* Clang on Win32 generates broken code that crashes for global blocks. */
#if !defined(OF_WINDOWS) || !defined(OF_X86) || !defined(__clang__)
static void (^globalBlock)(void) = ^ {};
#endif

static int
(^returnStackBlock(void))(void)
{
	__block int i = 42;

	return [Block_copy(^ int { return ++i; }) autorelease];

	void (^mallocBlock)(void);
	int (^voidBlock)(void);

	TEST(@"Class of stack block",
	    (Class)&_NSConcreteStackBlock == objc_getClass("OFStackBlock") &&
	    [stackBlock isKindOfClass: [OFBlock class]])

#if !defined(OF_WINDOWS) || !defined(__clang__) || !defined(OF_NO_SHARED)
#if !defined(OF_WINDOWS) || !defined(OF_X86) || !defined(__clang__)
	/*
	 * Causes a linker error on Windows with Clang when compiling as a
	 * static library. This is a bug in Clang.
	 */
	TEST(@"Class of global block",
	    (Class)&_NSConcreteGlobalBlock == objc_getClass("OFGlobalBlock") &&
	    [globalBlock isKindOfClass: [OFBlock class]])
#endif

	TEST(@"Class of a malloc block",
	    (Class)&_NSConcreteMallocBlock == objc_getClass("OFMallocBlock"))

	TEST(@"Copying a stack block",
	    (mallocBlock = [[stackBlock copy] autorelease]) &&
	    [mallocBlock class] == objc_getClass("OFMallocBlock") &&
	    [mallocBlock isKindOfClass: [OFBlock class]])

	TEST(@"Copying a stack block and referencing its variable",
	    forwardTest() == 5)

	TEST(@"Copying a stack block and using its copied variable",
	    (voidBlock = returnStackBlock()) && voidBlock() == 43 &&
	    voidBlock() == 44 && voidBlock() == 45)

#if !defined(OF_WINDOWS) || !defined(OF_X86) || !defined(__clang__)
	TEST(@"Copying a global block",
	    (id)globalBlock == [[globalBlock copy] autorelease])
#endif

#ifndef __clang_analyzer__
	TEST(@"Copying a malloc block",
	    (id)mallocBlock == [mallocBlock copy] &&
	    [mallocBlock retainCount] == 2)
#endif

	TEST(@"Autorelease a stack block", R([stackBlock autorelease]))

#if !defined(OF_WINDOWS) || !defined(OF_X86) || !defined(__clang__)
	TEST(@"Autorelease a global block", R([globalBlock autorelease]))
#endif

#ifndef __clang_analyzer__
	TEST(@"Autorelease a malloc block", R([mallocBlock autorelease]))
#endif

	objc_autoreleasePoolPop(pool);
}
@end