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Bug #4585

Updated by Davide Pesavento over 6 years ago

The newest version of ndn-cxx produces a bus error or a segfault when the producer example is executed. Here is the output when I ran the example through gdb and got a bus error: 

 ``` 
 (gdb) `(gdb) run 
 Starting program: /home/pi/ndn-cxx/examples/a.out  
 [Thread debugging using libthread_db enabled] 
 Using host libthread_db library "/lib/arm-linux-gnueabihf/libthread_db.so.1". 

 Breakpoint 1, main (argc=1, argv=0x7efff304) at producer.cpp:101 
 101 	   ndn::examples::Producer producer; 
 (gdb) next 
 103 	     producer.run(); 
 (gdb) next 
 [New Thread 0x7445b450 (LWP 11204)] 
 << I: /example/testApp/randomData?ndn.MustBeFresh=1&ndn.InterestLifetime=1500&ndn.Nonce=1194608572 
 >> D: Name: /example/testApp/randomData/testApp/%FD%00%00%01b%BB%983%05 
 MetaInfo: ContentType: 0, FreshnessPeriod: 1500 milliseconds 
 Content: (size: 11) 
 Signature: (type: SignatureSha256WithRsa, value_length: 256) 


 Thread 1 "a.out" received signal SIGBUS, Bus error. 
 0x00012b24 in __gnu_cxx::__atomic_add (__mem=0x4f921, __val=1) 
     at /usr/include/c++/6/ext/atomicity.h:53 
 53 	   { __atomic_fetch_add(__mem, __val, __ATOMIC_ACQ_REL); } 
 ``` 

 (gdb)  
 ` 
 And here is the output for the segmentation fault: 

 ``` 
 (gdb) `(gdb) run 
 Starting program: /home/travis/ndn-cxx/examples/a.out  
 [Thread debugging using libthread_db enabled] 
 Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". 

 Breakpoint 1, main (argc=1, argv=0x7fffffffded8) at producer.cpp:100 
 100 	 { 
 (gdb) next 
 101 	   ndn::examples::Producer producer; 
 (gdb) next 
 103 	     producer.run(); 
 (gdb) next 
 [New Thread 0x7ffff2f0d700 (LWP 4133)] 

 Thread 1 "a.out" received signal SIGSEGV, Segmentation fault. 
 0x00007ffff78feb05 in std::__shared_ptr<ndn::Buffer const, (__gnu_cxx::_Lock_policy)2>::__shared_ptr(std::__shared_ptr<ndn::Buffer const, (__gnu_cxx::_Lock_policy)2>&&) (__r=<optimized out>, this=<optimized out>) 
     at /usr/include/c++/5/bits/shared_ptr_base.h:936 
 936 		 __r._M_ptr = 0; 
 ``` (gdb)  

 ` 

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