Ceph

work in progress

Parsing \n in lfn_parse_object_name is implemented with

out->append('\0');

which segfaults when using libstdc++ and g++ version 4.6.3 on Debian
GNU/Linux.

The problem can be reproduced with a single file containing

main() { std::string s; s.append('\0'); }

When compiled and run with

g++ -o a a.cc ; valgrind --tool=memcheck ./a

it outputs the following:

                                                                                                           
==7446== Invalid read of size 1                                                                              
==7446==    at 0x40293A2: strlen (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)                    
==7446==    by 0x4AE2C7B: std::string::append(char const*) (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.17)
==7446==    by 0x400769: main (in /tmp/a)                                                                    
==7446==  Address 0x0 is not stack'd, malloc'd or (recently) free'd                                          
==7446== Process terminating with default action of signal 11 (SIGSEGV)                                      
==7446==  Access not within mapped region at address 0x0                                                     
==7446==    at 0x40293A2: strlen (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)                    
==7446==    by 0x4AE2C7B: std::string::append(char const*) (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.17)