// Now we are really in trouble.
// very bad, definitely very bad…not going to get very far

Source: Direct link to the source code
Software: OpenJDK
Programming language: Java

return 0; // Well, now we’re in trouble. But return something
          // anyway

Source: Direct link to the source code
Software: GNU Classpath
Programming language: Java

// Ok, If we’ve gotten here, we’re in trouble… […]

Source: Direct link to the source code
Software: Octave
Programming language: C++