undefined reference to `__stack_chk_fail' [solved]

Srowen · Post by **Srowen** » Sat Mar 21, 2009 4:42 am

hello,

i've got a problem while i try to link my kernel. in some functions, i've go the follow error message:

tmp/stdio.o: In function `printf_i':
stdio.c:(.text+0x1a9): undefined reference to `__stack_chk_fail'

what does it mean?
i'm using gcc on ubuntu...

JamesM · Post by **JamesM** » Sat Mar 21, 2009 4:49 am

add -fno-stack-protector to your CFLAGS.

Srowen · Post by **Srowen** » Sat Mar 21, 2009 5:31 am

thanks... now it runs..but... why? any explanation of this error?

Firestryke31 · Post by **Firestryke31** » Sat Mar 21, 2009 10:30 am

GCC likes to do a bunch of stuff behind the scenes. It's great for application programming because all of the runtime support is already there, unfortunately in OS development you have to make the runtime support yourself. Using that flag tells GCC to not to do some of that stuff behind the scenes, so you don't have to write the stuff until much later where you have an idea as to what you need and how to do it.

Srowen · Post by **Srowen** » Sat Mar 21, 2009 2:09 pm

thank's a lot..

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undefined reference to `__stack_chk_fail' [solved]

undefined reference to `__stack_chk_fail' [solved]

Re: undefined reference to `__stack_chk_fail'

Re: undefined reference to `__stack_chk_fail'

Re: undefined reference to `__stack_chk_fail'

Re: undefined reference to `__stack_chk_fail'