triplegolf - not only the source code length counts!

Bash, 23 characters

Error:

bash: /: Is a directory

Source:

echo       $0-$01234;/;

Output:

/bin/bash-/bin/bash1234

Brainf*ck, 32 characters

This code executes for about 3 seconds and stops and displays the following error and output.

Error:

bff: out of memory (-2058691272)

Source:

+++++[......-]..+[>>>>>>>>>>>>-]

Output: (Hexdump)

0505 0505 0505 0404 0404 0404 0303 0303
0303 0202 0202 0202 0101 0101 0101 0000

C, 35 characters

Warning:

b.c:1:30: warning: division by zero

Source and Output:

main(){system("cat "__FILE__)/0;;;}

PHP, 50 characters

Warning:

PHP Warning:  Division by zero in /tmp/3 on line 1

Source and Output:

<?php echo (0/0).''.file_get_contents(__FILE__);?>

C - 48 chars

main(i){while(++i<49)putchar(i);putchar('\z');}

Note: includes a final (Unix-style) newline.

Output from gcc a.c reads:

a.c:1:41: warning: unknown escape sequence '\z'

The output from a.out is mostly non-printing chars, so here's what it looks like after piping through hexdump:

00000000: 0203 0405 0607 0809 0A0B 0C0D 0E0F 1011  ................
00000010: 1213 1415 1617 1819 1A1B 1C1D 1E1F 2021  .............. !
00000020: 2223 2425 2627 2829 2A2B 2C2D 2E2F 307A  "#$%&'()*+,-./0z

JavaScript, 63 66

!function x(){console.log(x+'...');eval(Array(33).join('$'))}()

The output is:

function x(){console.log(x+'...');eval(Array(33).join('$'))}...

In Chrome, the error is:

ReferenceError: $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ is not defined