SEGV_ACCERR

[jezzmemo]

1 Note 0x0006d1e3 -ENTBinaryProtocol writeString:
2 Note 0x0006d1e3 -ENTBinaryProtocol writeString:
3 Note 0x000b9e5b +ENTProtocolUtil _writeValue:forField:toProtocol:
4 Note 0x000ba5d9 +ENTProtocolUtil writeObject:ontoProtocol:
5 Note 0x000b99f3 +ENTProtocolUtil _writeValue:forField:toProtocol:
6 Note 0x000ba84d +ENTProtocolUtil sendMessage:toProtocol:withArgPairs:
7 Note 0x000965cd -EDAMNoteStoreClient createNote:note:
8 Note 0x0012f329 __48-[ENNoteStoreClient createNote:success:failure:]_block_invoke (ENNoteStoreClient.m:504)
9 Note 0x000ed5f7 __52-[ENStoreClient invokeAsyncIdBlock:success:failure:]_block_invoke (ENStoreClient.m:107)

this crash is app problem? or evernote sdk bug?

[jezzmemo]

I find the bug,the ENTBinaryProtocol file,the method:

- (void) writeString: (NSString *) value {

  if (value != nil) {
    const char \* utf8Bytes = [value UTF8String];
    int length = (int)strlen(utf8Bytes);
    [self writeI32: length];
    [self.transport write: (uint8_t *) utf8Bytes offset: 0 length: length];
  }
  else {
    // instead of crashing when we get null, let's write out a zero
    // length string
    [self writeI32: 0];
  }
}

if the string value had some invalid characters,the utf8Bytes will point to the null,
strlen function will crash.