Strange execution error

[bhdavis1978]

Hi all,

I'm having a very strange execution error, even on extremely simple Hello, World programs.
e.g.

#include <stdio.h>

int main (int argc, const char * argv[]) {
    // insert code here...
    printf("Hello, World!\n");
    return 0;
}

I get a SIGSEGV (type 11) or a type 4 error (don't recall the code). I've got no idea what's going on. I wonder if I've got a physical problem with my computer? I'm downloading Apple's Tech Tool Deluxe, and running NAV just to be sure.

Here are my computers specs, in case it's relevant

Model Name: MacBook Pro
Model Identifier: MacBookPro3,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.2 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 4 MB
Memory: 4 GB
Bus Speed: 800 MHz
Boot ROM Version: MBP31.0070.B07

[tabstop]

Signal 4 is SIGILL (illegal instruction). Can't say I've seen that, though. I assume you're using gcc/Xcode? I've been getting all sorts of notices about updates/downdates from Apple recently, what with all the new hardware and all, so maybe make sure you've got the version you're supposed to have?

[Salem]

Which version of gcc (and architecture) are you using?

$ gcc -dumpversion
4.3.3
$ gcc -dumpmachine
i486-linux-gnu

[bhdavis1978]

Yeah, I am using Xcode/gcc. I'm sure I had the version I was supposed to have- it's been working for months, and then this happened. I went to the command line and tried to compile a simple program by hand, and it worked just fine, which seemed to indicate there was a problem with Xcode itself. So I downloaded a fresh install of Xcode- and that seems to have done the trick.

Anyway, the problem seems to have resolved itself with a fresh Xcode install. I'm just starting to worry that something's wrong with the hardware on this machine, cause it's starting to act strange at times. That said, I did buy AppleCare, so as long as my computer craps out on me before Apple Care is up, I won't be too upset.