arc-jump-block.m
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// RUN: %clang_cc1 -triple x86_64-apple-darwin11 -fsyntax-only -fobjc-arc -fblocks -verify -Wno-objc-root-class %s
// rdar://9535237
typedef struct dispatch_queue_s *dispatch_queue_t;
typedef void (^dispatch_block_t)(void);
void dispatch_async(dispatch_queue_t queue, dispatch_block_t block);
extern __attribute__((visibility("default"))) struct dispatch_queue_s _dispatch_main_q;
@interface SwitchBlockCrashAppDelegate
- (void)pageLeft;
- (void)pageRight;;
@end
@implementation SwitchBlockCrashAppDelegate
- (void)choose:(int)button {
switch (button) {
case 0:
dispatch_async((&_dispatch_main_q), ^{ [self pageLeft]; }); // expected-note 3 {{jump enters lifetime of block which strongly captures a variable}}
break;
case 2: // expected-error {{cannot jump}}
dispatch_async((&_dispatch_main_q), ^{ [self pageRight]; }); // expected-note 2 {{jump enters lifetime of block which strongly captures a variable}}
break;
case 3: // expected-error {{cannot jump}}
{
dispatch_async((&_dispatch_main_q), ^{ [self pageRight]; });
break;
}
case 4: // expected-error {{cannot jump}}
break;
}
__block SwitchBlockCrashAppDelegate *captured_block_obj;
switch (button) {
case 10:
{
dispatch_async((&_dispatch_main_q), ^{ [self pageLeft]; });
break;
}
case 12:
if (button)
dispatch_async((&_dispatch_main_q), ^{ [captured_block_obj pageRight]; });
break;
case 13:
while (button)
dispatch_async((&_dispatch_main_q), ^{ [self pageRight]; });
break;
case 14:
break;
}
switch (button) {
case 10:
{
dispatch_async((&_dispatch_main_q), ^{ [self pageLeft]; });
break;
}
case 12:
if (button)
dispatch_async((&_dispatch_main_q), ^{ [self pageRight]; });
switch (button) {
case 0:
{
dispatch_async((&_dispatch_main_q), ^{ [self pageLeft]; });
break;
}
case 4:
break;
}
break;
case 13:
while (button)
dispatch_async((&_dispatch_main_q), ^{ [self pageRight]; });
break;
case 14:
break;
}
}
- (void)pageLeft {}
- (void)pageRight {}
@end
// Test 2. rdar://problem/11150919
int test2(id obj, int state) { // expected-note {{jump enters lifetime of block}} FIXME: weird location
switch (state) {
case 0:
(void) ^{ (void) obj; };
return 0;
default: // expected-error {{cannot jump}}
return 1;
}
}