Re: gcc and variable length arrays
On Tue, Oct 10, 2006 at 02:42:12PM -0700, Joe wrote: By the way, if anyone has any pointers (no pun intended) for a CS newbie, any help and recommendations are always appeciated. I like the OpenBSD development community and hope to contribute some code and patches in the future. Advanced UNIX Programming, by Stevens. Very well written and organized. The code samples are great too. m
Re: gcc and variable length arrays
On 10/9/06, Joe [EMAIL PROTECTED] wrote: I'm trying to find a compiler that supports variable length arrays. I'm currently taking a computer science class and noticed that gcc's support for variable lenght arrays is broken [0]. i think you'll be hard pressed to come up with an example that doesn't actually work for you.
Re: gcc and variable length arrays
Ted Unangst wrote: On 10/9/06, Joe [EMAIL PROTECTED] wrote: I'm trying to find a compiler that supports variable length arrays. I'm currently taking a computer science class and noticed that gcc's support for variable lenght arrays is broken [0]. i think you'll be hard pressed to come up with an example that doesn't actually work for you. Thanks. I'm a student and just getting started and my instructor was telling the class how the schools version copies of MS Visual C 6.0 is not C99 compliant and that some of the examples in the book[0] fail to compile. I read up on GCC 3.3.5 and it appears that it is mostly compliant with a few issues, including the variable length arrays which happens to be on one of my homework assignments. But it looks like I'll be ok. By the way, if anyone has any pointers (no pun intended) for a CS newbie, any help and recommendations are always appeciated. I like the OpenBSD development community and hope to contribute some code and patches in the future. [0] A Structured Approach Using C ISBN: 0534491324
Re: gcc and variable length arrays
On 10/10/06, Joe [EMAIL PROTECTED] wrote: By the way, if anyone has any pointers (no pun intended) for a CS newbie, any help and recommendations are always appeciated. I like the OpenBSD development community and hope to contribute some code and patches in the future. Read the source tree. No really, check out a copy of the source tree and read over daemons that sound interesting, deal with things you wish to implement, or are currently studying. I don't code too much c, but when I do I try to find similiar code in the OpenBSD tree and study it first. If I want to make use a some function or library I have never used before I first read the man page on it and then find some examples of it in the tree. c is a fairly simple language, but it takes huge amounts of practice to really become good at it (I hope to be good someday...) and there is no better way (in my opinion) to get better at it than by reading well written code. So sync up to -current today and start reading, who knows you might even find a few bugs. Good luck, Sam
Re: gcc and variable length arrays
Joe [EMAIL PROTECTED] writes: ... Thanks. I'm a student and just getting started and my instructor was telling the class how the schools version copies of MS Visual C 6.0 is not C99 compliant and that some of the examples in the book[0] fail to compile. I read up on GCC 3.3.5 and it appears that it is mostly compliant with a few issues, including the variable length arrays which happens to be on one of my homework assignments. But it looks like I'll be ok. Aside from the compiler, you need to consider the C library if you have to have full C99 compliance for some reason. It doesn't appear that it's all done yet in OpenBSD's libc. Or at least the %a format specifier for printf isn't there. But I bet you won't end up needing that. By the way, if anyone has any pointers (no pun intended) for a CS newbie, any help and recommendations are always appeciated. I like the OpenBSD development community and hope to contribute some code and patches in the future. I took a course once and read some source from OpenBSD userland to try to supplement what I was learning. It seemed much nicer reading than the GNU source for the same programs - clearer, more direct and to the point. If feasible I'd ignore the book your professor assigned and read The C Programming Language by Kernighan and Ritchie and C, A Reference Manual, by Harbison and Steel instead. Some professors feel an obligation to assign so called easier (and bulkier) texts. It's a waste of your time to read those sorts of books. I can only imagine that anything with the words a structured approach to... in the title is not going to be any fun. -- Mike Small [EMAIL PROTECTED]
Re: gcc and variable length arrays
On Mon, 2006-10-09 at 22:07 -0700, Joe wrote: I'm trying to find a compiler that supports variable length arrays. I'm currently taking a computer science class and noticed that gcc's support for variable lenght arrays is broken [0]. The reason why it is broken is not the reason why you think. But it just accepts too much invalid code. Well there are some other bugs but most you will not hit unless you use goto's. -- Pinski
