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Subject:	Re: General Protection Fault error is intermittent
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Hi,

On Tuesday, June 25, 2013 6:26:59 PM UTC-5, K.J.Williams wrote:
> 
> Well I have noticed this in some .h files (which I can read in
> RHIDE), they sometimes #include other .h(s) before the defintions.
> I thought , maybe string.h or stdio.h has a ctype.h included which
> is allowing me to get away from actually using #include<ctype.h>
> in my code that I was needing isspace(); for. But I immediately
> added that #include to my source code to prevent future problems

You mentioned C99 explicitly, so you must be targeting that. I'm
far from standards expert, but C89 (aka, ANSI C) only had 15
headers, and they were all standalone. (Doesn't mean they didn't
include system dependent stuff behind the scenes, but the 15
weren't mixed amongst themselves.)

C99 changed that, as I recently found out on djgpp-workers.
Apparently some are mixed these days, e.g. inttypes.h apparently
includes stdint.h. But you can't always count on such things
for other headers, so it's best to be explicit in always including
headers for functions you use.

http://stackoverflow.com/questions/2027991/list-of-standard-header-files-in-c-and-c

BTW, my recommendation (for you) is to use "-Wall -Wextra -Wpedantic -std=c99"
with latest GCC 4.8.1, though I doubt that will automatically avoid all possible errors. But hey, it's better than nothing.

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