Invalid pointer

[tobiasBora]

Hello,

First, thank you for your program. However, when I try to run your example with "make test && ./SimpleExample.native" (after choosing the good tty), I got the error:

./SimpleExample.native 
*** Error in `./SimpleExample.native': free(): invalid pointer: 0x000000000107a148 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x70bcb)[0x7ff6775d7bcb]
/lib/x86_64-linux-gnu/libc.so.6(+0x76fa6)[0x7ff6775ddfa6]
/lib/x86_64-linux-gnu/libc.so.6(+0x7779e)[0x7ff6775de79e]
/usr/lib/x86_64-linux-gnu/libstdc++.so.6(_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE9_M_assignERKS4_+0x87)[0x7ff678141547]
./SimpleExample.native[0x429ba0]
./SimpleExample.native[0x428917]
./SimpleExample.native[0x40702d]
./SimpleExample.native[0x405210]
./SimpleExample.native[0x405317]
./SimpleExample.native[0x402959]
./SimpleExample.native[0x440186]
./SimpleExample.native[0x44079d]
./SimpleExample.native[0x40277c]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1)[0x7ff6775872b1]
./SimpleExample.native[0x4027ba]
======= Memory map: ========
00400000-00457000 r-xp 00000000 fe:01 25069340                           /home/leo/Informatique/Programmation/Arduino/Ocaml/firmata/_build/examples/SimpleExample.native
00656000-00657000 r--p 00056000 fe:01 25069340                           /home/leo/Informatique/Programmation/Arduino/Ocaml/firmata/_build/examples/SimpleExample.native
00657000-0066e000 rw-p 00057000 fe:01 25069340                           /home/leo/Informatique/Programmation/Arduino/Ocaml/firmata/_build/examples/SimpleExample.native
0066e000-0067b000 rw-p 00000000 00:00 0 
0101c000-0107b000 rw-p 00000000 00:00 0                                  [heap]
7ff670000000-7ff670021000 rw-p 00000000 00:00 0 
7ff670021000-7ff674000000 ---p 00000000 00:00 0 
7ff676fa3000-7ff677567000 rw-p 00000000 00:00 0 
7ff677567000-7ff6776fc000 r-xp 00000000 fe:00 792114                     /lib/x86_64-linux-gnu/libc-2.24.so
7ff6776fc000-7ff6778fb000 ---p 00195000 fe:00 792114                     /lib/x86_64-linux-gnu/libc-2.24.so
7ff6778fb000-7ff6778ff000 r--p 00194000 fe:00 792114                     /lib/x86_64-linux-gnu/libc-2.24.so
7ff6778ff000-7ff677901000 rw-p 00198000 fe:00 792114                     /lib/x86_64-linux-gnu/libc-2.24.so
7ff677901000-7ff677905000 rw-p 00000000 00:00 0 
7ff677905000-7ff67791b000 r-xp 00000000 fe:00 786606                     /lib/x86_64-linux-gnu/libgcc_s.so.1
7ff67791b000-7ff677b1a000 ---p 00016000 fe:00 786606                     /lib/x86_64-linux-gnu/libgcc_s.so.1
7ff677b1a000-7ff677b1b000 r--p 00015000 fe:00 786606                     /lib/x86_64-linux-gnu/libgcc_s.so.1
7ff677b1b000-7ff677b1c000 rw-p 00016000 fe:00 786606                     /lib/x86_64-linux-gnu/libgcc_s.so.1
7ff677b1c000-7ff677b1e000 r-xp 00000000 fe:00 792122                     /lib/x86_64-linux-gnu/libdl-2.24.so
7ff677b1e000-7ff677d1e000 ---p 00002000 fe:00 792122                     /lib/x86_64-linux-gnu/libdl-2.24.so
7ff677d1e000-7ff677d1f000 r--p 00002000 fe:00 792122                     /lib/x86_64-linux-gnu/libdl-2.24.so
7ff677d1f000-7ff677d20000 rw-p 00003000 fe:00 792122                     /lib/x86_64-linux-gnu/libdl-2.24.so
7ff677d20000-7ff677e23000 r-xp 00000000 fe:00 792124                     /lib/x86_64-linux-gnu/libm-2.24.so
7ff677e23000-7ff678022000 ---p 00103000 fe:00 792124                     /lib/x86_64-linux-gnu/libm-2.24.so
7ff678022000-7ff678023000 r--p 00102000 fe:00 792124                     /lib/x86_64-linux-gnu/libm-2.24.so
7ff678023000-7ff678024000 rw-p 00103000 fe:00 792124                     /lib/x86_64-linux-gnu/libm-2.24.so
7ff678024000-7ff678195000 r-xp 00000000 fe:00 1180732                    /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22
7ff678195000-7ff678395000 ---p 00171000 fe:00 1180732                    /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22
7ff678395000-7ff67839f000 r--p 00171000 fe:00 1180732                    /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22
7ff67839f000-7ff6783a1000 rw-p 0017b000 fe:00 1180732                    /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22
7ff6783a1000-7ff6783a5000 rw-p 00000000 00:00 0 
7ff6783a5000-7ff6783c8000 r-xp 00000000 fe:00 787092                     /lib/x86_64-linux-gnu/ld-2.24.so
7ff6784bb000-7ff678582000 rw-p 00000000 00:00 0 
7ff6785c3000-7ff6785c7000 rw-p 00000000 00:00 0 
7ff6785c7000-7ff6785c8000 r--p 00022000 fe:00 787092                     /lib/x86_64-linux-gnu/ld-2.24.so
7ff6785c8000-7ff6785c9000 rw-p 00023000 fe:00 787092                     /lib/x86_64-linux-gnu/ld-2.24.so
7ff6785c9000-7ff6785ca000 rw-p 00000000 00:00 0 
7fff648b7000-7fff648d8000 rw-p 00000000 00:00 0                          [stack]
7fff648f3000-7fff648f5000 r--p 00000000 00:00 0                          [vvar]
7fff648f5000-7fff648f7000 r-xp 00000000 00:00 0                          [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                  [vsyscall]
Abandon

Do you know why ?

Thank you !

[modlfo]

Seems like my last commit produces the error. You can revert the last commit by checking out this commit ac2e154 . Meanwhile I can fix the error.

Thanks for the report.

[modlfo]

I think I have fixed the error in b569d3e. It works for me without issues.

Let me know if if it's fixed or you still have problems.

Thanks!

[tobiasBora]

Thank you for your update. Now I have a segfault if I give a wrong serial port. Maybe a clearer explanation would be interesting...

And I have one more question (which is a bit out of topic) : where could I find an equivalent between the pin number here: "http://letsmakerobots.com/files/field_primary_image/NanoAnalogPinChanges.resized.jpg" and in the print information display ?

Thank you !