I was trying to implement a project using Ruby's C API which led me to the following problem. I have a script that requires the Singleton module and noticed that my program always crashes, so I boiled the issue down to using the following code:
#include <ruby.h> int main(int argc, char* argv[]) { ruby_init(); rb_require("singleton"); return ruby_cleanup(0); } Compile it using
gcc test.c `pkg-config --cflags --libs ruby` Whenever I run this I get a segfault at the rb_require("singleton").
ruby: [BUG] Segmentation fault at 0x00000c ruby 2.3.0p0 (2015-12-25) [i386-linux-gnu] -- Control frame information ----------------------------------------------- c:0001 p:0000 s:0002 E:001788 (none) [FINISH] -- Machine register context ------------------------------------------------ GS: 0x00000063 FS: 0x00000000 ES: 0x0000002b DS: 0x0000002b EDI: 0x098163e8 ESI: 0xf7f7f230 EBP: 0xff8004c8 ESP: 0xff8004c4 EBX: 0x00000006 EDX: 0x00000000 ECX: 0x00000006 EAX: 0x09816410 TRA: 0x0000000e ERR: 0x00000004 EIP: 0xf7d29d76 CS: 0x00000023 EFL: 0x00010212 UES: 0xff8004c4 SS: 0x0000002b -- C level backtrace information ------------------------------------------- /lib/i386-linux-gnu/libruby-2.3.so.2.3 [0xf7e49c41] /lib/i386-linux-gnu/libruby-2.3.so.2.3 [0xf7e49e33] /lib/i386-linux-gnu/libruby-2.3.so.2.3 [0xf7d267cc] /lib/i386-linux-gnu/libruby-2.3.so.2.3 [0xf7dd4493] linux-gate.so.1 [0xf7f9e090] /lib/i386-linux-gnu/libruby-2.3.so.2.3 [0xf7d29d76] /lib/i386-linux-gnu/libruby-2.3.so.2.3 [0xf7d2ae68] /lib/i386-linux-gnu/libruby-2.3.so.2.3 [0xf7d2b2d1] /lib/i386-linux-gnu/libruby-2.3.so.2.3 [0xf7d26e2b] /lib/i386-linux-gnu/libruby-2.3.so.2.3 [0xf7d28734] /lib/i386-linux-gnu/libruby-2.3.so.2.3 [0xf7d30903] /lib/i386-linux-gnu/libruby-2.3.so.2.3(rb_require+0x3a) [0xf7d309da] ./a.out(main+0x23) [0x80485ee] I tried this with several Ruby versions (2.3, 2.5 and 2.7) on different machines and always run into the same issue, so at the moment I think I am doing something wrong.
Can someone explain what might be the issue here?
