Alternative for getline() function in AIX 5.3

[Omer Zak]

DISCLAIMER:
1. I don't have access to AIX.
2. I didn't actually test my suggestions.

Alternatives:

1. Use fgets() if it is available for AIX, too.

2. According to man getline, getline() is a GNU extension, and is
available only when you #define _GNU_SOURCE.
So use:
#ifdef __GNUC__
  // use getline()
#else /* __GNUC__ */
  // use gets() or fgets()
#endif /* __GNUC__ */

3. Same as (2) but test __USE_POSIX instead of __GNUC__


On Tue, 2010-07-27 at 13:15 +0300, Israel Shikler wrote:
> Hi,
>  
> I have a C program that reads one line of text from the keyboard.
>  
> The original program was written 10 years ago and was compiled with cc
> on AIX 4.x. 
> I used the gets() function which was the only option available at the
> time.
>  
> Recently, I had to port the program to gcc on Linux, but I was
> confronted with lots of segfaults.
> So, I had to change the function to getline() which is much more
> stable and secure.
>  
> However, I was asked to maintain the new version on AIX 5.3 as well. 
>  
> When recompiling the program on the AIX machine I was confronted with
> the lack of getline() in AIX implementation of cc.
> I do not have gcc on that machine, and installing it would be an
> option of last resort .
>  
> I am looking for an alternative to getline(), that would be portable
> to both Linux and AIX.

-- 
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