Re: External functions returning C_DOUBLE are called twice (bug?)
- Posted by ghaberek (admin) Dec 17, 2020
- 1021 views
Stack trace showing the call is coming from inside the house that call_routine() macro as I suspected:
$ gdb /home/greg/Projects/OpenEuphoria/euphoria/source/build/eui
GNU gdb (Ubuntu 8.1.1-0ubuntu1) 8.1.1
Reading symbols from /home/greg/Projects/OpenEuphoria/euphoria/source/build/eui...done.
(gdb) break hello
Function "hello" not defined.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (hello) pending.
(gdb) run libmytest.e
Starting program: /home/greg/Projects/OpenEuphoria/euphoria/source/build/eui libmytest.e
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Breakpoint 1, 0x00007ffff701f62e in hello () from ./libmytest.so
(gdb) bt
#0 0x00007ffff701f62e in hello () from ./libmytest.so
#1 0x0000555555952aa3 in dcall_x86_64 (func=func@entry=140737337488938, xmm=xmm@entry=0x7fffffffb2e0,
r=r@entry=0x7fffffffb320) at /home/greg/Projects/OpenEuphoria/euphoria/source/be_callc.c:1015
#2 0x0000555555953273 in call_c (func=<optimized out>, proc_ad=<optimized out>, arg_list=-9223360308729739510)
at /home/greg/Projects/OpenEuphoria/euphoria/source/be_callc.c:1486
#3 0x000055555594e9a5 in do_exec (start_pc=0x555555d84098)
at /home/greg/Projects/OpenEuphoria/euphoria/source/be_execute.c:5179
#4 0x000055555594642f in Execute (start_index=0x555555d84098)
at /home/greg/Projects/OpenEuphoria/euphoria/source/be_execute.c:1839
#5 0x0000555555957c29 in start_backend (x=-9223360308729746296)
at /home/greg/Projects/OpenEuphoria/euphoria/source/be_machine.c:2911
#6 0x00005555559581ee in machine (opcode=65, x=-9223360308729746296)
at /home/greg/Projects/OpenEuphoria/euphoria/source/be_machine.c:3216
#7 0x00005555555cd442 in _69BackEnd (_il_file_68425=0)
at /home/greg/Projects/OpenEuphoria/euphoria/source/build/intobj/backend.c:4276
#8 0x0000555555651f51 in _2BackEnd (_x_192=0)
at /home/greg/Projects/OpenEuphoria/euphoria/source/build/intobj/mode.c:170
#9 0x00005555555e966e in _75main () at /home/greg/Projects/OpenEuphoria/euphoria/source/build/intobj/main.c:1134
#10 0x00005555557d3c47 in main (argc=2, argv=0x7fffffffe528)
at /home/greg/Projects/OpenEuphoria/euphoria/source/build/intobj/main-.c:22331
(gdb) cont
Continuing.
Hello! Your number was 123.456
Breakpoint 1, 0x00007ffff701f62e in hello () from ./libmytest.so
(gdb) bt
#0 0x00007ffff701f62e in hello () from ./libmytest.so
#1 0x0000555555952a15 in icall_x86_64 (func=func@entry=140737337488938, xmm=xmm@entry=0x7fffffffb2e0,
r=r@entry=0x7fffffffb320, args=args@entry=6) at /home/greg/Projects/OpenEuphoria/euphoria/source/be_callc.c:1005
#2 0x000055555595328f in call_c (func=<optimized out>, proc_ad=<optimized out>, arg_list=-9223360308729739510)
at /home/greg/Projects/OpenEuphoria/euphoria/source/be_callc.c:1486
#3 0x000055555594e9a5 in do_exec (start_pc=0x555555d84098)
at /home/greg/Projects/OpenEuphoria/euphoria/source/be_execute.c:5179
#4 0x000055555594642f in Execute (start_index=0x555555d84098)
at /home/greg/Projects/OpenEuphoria/euphoria/source/be_execute.c:1839
#5 0x0000555555957c29 in start_backend (x=-9223360308729746296)
at /home/greg/Projects/OpenEuphoria/euphoria/source/be_machine.c:2911
#6 0x00005555559581ee in machine (opcode=65, x=-9223360308729746296)
at /home/greg/Projects/OpenEuphoria/euphoria/source/be_machine.c:3216
#7 0x00005555555cd442 in _69BackEnd (_il_file_68425=0)
at /home/greg/Projects/OpenEuphoria/euphoria/source/build/intobj/backend.c:4276
#8 0x0000555555651f51 in _2BackEnd (_x_192=0)
at /home/greg/Projects/OpenEuphoria/euphoria/source/build/intobj/mode.c:170
#9 0x00005555555e966e in _75main () at /home/greg/Projects/OpenEuphoria/euphoria/source/build/intobj/main.c:1134
#10 0x00005555557d3c47 in main (argc=2, argv=0x7fffffffe528)
at /home/greg/Projects/OpenEuphoria/euphoria/source/build/intobj/main-.c:22331
(gdb) cont
Continuing.
Hello! Your number was 123.456
Got back: 246.912
warning: Temporarily disabling breakpoints for unloaded shared library "./libmytest.so"
[Inferior 1 (process 6091) exited normally]
(gdb) quit
-Greg
