STDERR_FILENO uneclared on ubuntu

Question

I am trying to compile a stack trace example that displays code . When I compile the file test.cwith

gcc -g -rdynamic ./test.c -o test

I get the following error:

./test.c: In function ‘handler’:
./test.c:16: error: ‘STDERR_FILENO’ undeclared (first use in this function)
./test.c:16: error: (Each undeclared identifier is reported only once
./test.c:16: error: for each function it appears in.)

My inclusions are the same as in the source mail code:

#include <stdio.h>
#include <execinfo.h>
#include <signal.h>
#include <stdlib.h>

My car is ubuntu 13.04. Did I skip some library or add nothing?

Answer 1

Also #include <unistd.h>.

See the GNU documentation .