signal SIGSEGV, Segmentation fault

[Omid Fathi]

Hi 

I install bcm2835-1.68 by steps that wrote in https://www.airspayce.com/mikem/bcm2835/

on my RPI4 B with Linux raspberrypi 5.10.63-v7l+  armv7l GNU/Linux

Now when i compile my code with gcc "version 8.3" with adding " -l bcm2835 ", when i try to run the program i get "Segmentation fault", so compile my code with -g and put it in gdb and then run it, so i get this error:

###

Program received signal SIGSEGV, Segmentation fault.

strlen () at ../sysdeps/arm/armv6/strlen.S:26

26 ../sysdeps/arm/armv6/strlen.S: No such file or directory.

###

when i run bt after that i get these messages:

###

#0  strlen () at ../sysdeps/arm/armv6/strlen.S:26

#1  0xb6e8852c in __GI__IO_puts (

    str=0x17041406 <error: Cannot access memory at address 0x17041406>)

    at ioputs.c:35

#2  0x00010a64 in main () at EtherBerry_Test.cpp:85

####

run with sudo, without sudo and there is no different

I really need your help, Thanks

[Mike McCauley]

Hello,

looks like there is a bug in your program. Seems you are passing a bad pointer
to ioputs()

I cant say any more without seeing your code.
But I dont think its anything to do with bcm2835.

Cheers.

--
Mike McCauley VK4AMM mi...@airspayce.com
Airspayce Pty Ltd 9 Bulbul Place Currumbin Waters QLD 4223 Australia
http://www.airspayce.com 5R3MRFM2+X6
Phone +61 7 5598-7474

[Omid Fathi]

Here is the code 

[Mike McCauley]

Hello,

Hard to say, but perhaps the read from the clock failed and this line is
crashing because buf[3] is 0 or less?

printf("%s\n", str[(unsigned char)buf[3]-1]);