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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - __NSStackBlock__ cant't be copy to __NSMallocBlock__ in arc"
href="https://bugs.llvm.org/show_bug.cgi?id=46399">46399</a>
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<th>Summary</th>
<td>__NSStackBlock__ cant't be copy to __NSMallocBlock__ in arc
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>other
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>LLVM Codegen
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>sunbohong@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
</td>
</tr></table>
<p>
<div>
<pre>The follow code will be crash in iOS.
-(NSArray*)getBlockArray
{
int num = 916;
return [NSArray arrayWithObjects:
^{ NSLog(@"this is block 0:%i", num); },
^{ NSLog(@"this is block 1:%i", num); },
^{ NSLog(@"this is block 2:%i", num); },
nil];
}
- (void)forTest
{
int a = 10;
int b = 20;
}
- (void)test
{
NSArray* blockArr = [self getBlockArray];
[self forTest];
void (^blockObject)(void);
for(blockObject in blockArr){
blockObject();
}
===================
And the follow code will print blocks with different type in macOS.
void testBlockArray() {
int val = 10;
NSArray *arr = [NSArray arrayWithObjects:^(){NSLog(@"blk0:%d",
val);},^(){NSLog(@"blk1:%d", val);}, nil];
NSLog(@"%@", arr);
}
(
"<__NSMallocBlock__: 0x600003bb6e80>",
"<__NSStackBlock__: 0x7ffedfdf7c10>"
)
==================
I try to fix this crash with
<a href="https://github.com/sunbohong/llvm-project/commit/7132d1ee82431ee182775cc65d5de1091cb78cde">https://github.com/sunbohong/llvm-project/commit/7132d1ee82431ee182775cc65d5de1091cb78cde</a></pre>
</div>
</p>
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