What are some of the reasons dlopen can segfault other than a shared object that does not exist?
In my case, I know that a shared object exists, but when my program loads it using dlopen, these are segfaults. I checked in my lib folder, and the shared object is there, and all the paths are correct.
handle = dlopen(libraryName.c_str(), RTLD_LAZY | RTLD_GLOBAL);
gdb bt:
#0 0x00000000001b94f5 in ?? ()
#1 0x00007fffefd96db6 in __do_global_ctors_aux () from /usr/local/lib/MY_LIB2.so
#2 0x00007fffefcf82c3 in _init () from /usr/local/lib/MY_LIB2.so
#3 0x00007fffed69c6c8 in ?? () from /usr/local/lib/MY_LIB1.so
#4 0x00007ffff7de9dc4 in call_init () from /lib64/ld-linux-x86-64.so.2
#5 0x00007ffff7de9ef6 in _dl_init_internal () from /lib64/ld-linux-x86-64.so.2
#6 0x00007ffff7dedf43 in dl_open_worker () from /lib64/ld-linux-x86-64.so.2
#7 0x00007ffff7de9c36 in _dl_catch_error () from /lib64/ld-linux-x86-64.so.2
#8 0x00007ffff7ded7ca in _dl_open () from /lib64/ld-linux-x86-64.so.2
#9 0x00007ffff5c5af26 in dlopen_doit () from /lib64/libdl.so.2
#10 0x00007ffff7de9c36 in _dl_catch_error () from /lib64/ld-linux-x86-64.so.2
#11 0x00007ffff5c5b4cf in _dlerror_run () from /lib64/libdl.so.2
#12 0x00007ffff5c5afc1 in dlopen@@GLIBC_2.2.5 () from /lib64/libdl.so.2
#13 0x00007ffff6ecef7e in mynamespace::Factory::attachModule (this=0x61d440, libraryName=...) at Factory.cpp:324
#14 0x00007ffff6ecefe6 in mynamespace::Factory::attachFunction (this=0x61d440, functionName=..., moduleName=...) at Factory.cpp:343
#15 0x00007ffff6ecdd16 in mynamespace::Factory::ReadFile (this=0x61d440, x=...) at Factory.cpp:111
#16 0x00007ffff6ecda62 in mynamespace::Factory::ReadDirectory (this=0x61d440, x=...) at Factory.cpp:79
#17 0x00007ffff6ecdc66 in mynamespace::Factory::ReadDirectory (this=0x61d440, x=0x417901 "/usr/local/lib/") at Factory.cpp:105
# 18 0x0000000000410637 in main (argc = 2, argv = 0x7fffffffdd58) on main.cpp: 78
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