On OS X 10.7 the following is crashing on occasion in a GC app when the path
contains an RTFD document:
On SL the issue does not occur.
NSAttributedString *atext = [[NSAttributedString alloc] initWithPath:Path
documentAttributes:NULL];
The kernel log states:
01/08/2011 09:44:29.000 kernel: Data/Stack execution not permitted:
MondayApp[pid 59614] at virtual address 0xfefff000, protections were read-write
I have tried disabling the collector without effect.
The code is used to load an RTFD file resource and often loads the resource
without issue.
The crash is repeatable in the sense that it occurs when the code is triggered
by particular set of bindings.
Other non RTFD file resources are loaded at the same time and load without
issue.
The path is okay.
The following workaround seems reliable:
// get path to rtf file
NSString *filePath = [path stringByAppendingPathComponent:@"TXT.rtf"];
// get data
NSData *data = [NSData dataWithContentsOfFile:filePath options:0
error:&docError];
// get attributed string
if (!docError) {
atext = [[NSAttributedString alloc] initWithData:data options:nil
documentAttributes:NULL error:&docError];
}
This might work for anyone else hitting this issue.
0x95c48d61 <+0000> push %ebp
0x95c48d62 <+0001> mov %esp,%ebp
0x95c48d64 <+0003> push %esi
0x95c48d65 <+0004> sub $0x24,%esp
0x95c48d68 <+0007> call 0x95c48d6d
<-[NSAttributedString(NSAttributedStringKitAdditions)
initWithPath:documentAttributes:]+12>
0x95c48d6d <+0012> pop %esi
0x95c48d6e <+0013> mov 0x16b37697(%esi),%eax
0x95c48d74 <+0019> mov 0x16b26803(%esi),%ecx
0x95c48d7a <+0025> mov 0x10(%ebp),%edx
0x95c48d7d <+0028> mov %edx,0x8(%esp)
0x95c48d81 <+0032> mov %ecx,0x4(%esp)
0x95c48d85 <+0036> mov %eax,(%esp)
0x95c48d88 <+0039> call 0x962937e2 <dyld_stub_objc_msgSend>
0x95c48d8d <+0044> mov 0x16b26dd3(%esi),%ecx
0x95c48d93 <+0050> mov 0x14(%ebp),%edx
0x95c48d96 <+0053> mov %edx,0x10(%esp)
0x95c48d9a <+0057> mov %eax,0x8(%esp)
0x95c48d9e <+0061> mov %ecx,0x4(%esp)
0x95c48da2 <+0065> mov 0x8(%ebp),%eax
0x95c48da5 <+0068> mov %eax,(%esp)
0x95c48da8 <+0071> movl $0x0,0x14(%esp)
0x95c48db0 <+0079> movl $0x0,0xc(%esp)
0x95c48db8 <+0087> call 0x962937e2 <dyld_stub_objc_msgSend>
0x95c48dbd <+0092> add $0x24,%esp <<-- program received signal
EXC_BAD_ACCESS
0x95c48dc0 <+0095> pop %esi
0x95c48dc1 <+0096> pop %ebp
0x95c48dc2 <+0097> ret
Regards
Jonathan Mitchell
Developer
Mugginsoft LLP
http://www.mugginsoft.com
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