testcomp in tests folder is crashing

[theSundayProgrammer]

I am running Ubuntu 18.04.2 LTS. The application wouldn't compile until I changed
CCPP=g++
in tests/Makefile. The application crashes when I run it. I have attached below the trace running under gdb.

.....
This GDB was configured as "x86_64-linux-gnu".
...
(gdb) run
Starting program: /home/chakra/projects/ocaml/camlidl/tests/testcomp
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
1: AddRef: new refcount is 1
1: Release: new refcount is 0
1: destroying component.
1: destroy self.
Testing IX interface...
Calling f 10

Program received signal SIGSEGV, Segmentation fault.
0x000055555555d5b2 in camlidl_component_IX_F (_v_this=140737333665048, _v_x=21) at component_stubs.c:29
29 this->lpVtbl->F(this, x);
(gdb) backtrace
#0 0x000055555555d5b2 in camlidl_component_IX_F (_v_this=140737333665048, _v_x=21) at component_stubs.c:29
#1 0x000055555557aa7c in caml_interprete (prog=0x7ffff7fab010, prog_size=) at interp.c:908
#2 0x000055555557d774 in caml_main (argv=0x7fffffffde28) at startup_byt.c:448
#3 0x000055555555cd8c in main (argc=, argv=) at main.c:44
(gdb)