Is something wrong with the compiler ?

[David Wald]

In article <26875 at mimsy.umd.edu> chris at mimsy.umd.edu (Chris Torek) writes:
>In short, when the ANSI standard says that the result of an operation
>is undefined, it means UNDEFINED.  The computer can do anything (like
>turn into a flower)---the system does not have to do anything remotely
>reasonable.

I'm continually amused by the examples people give for undefined and
implementation-defined behavior.  Can we get a list together, possibly
to be incorporated into an Emacs macro?

Examples:

  Melt your screen;
  Call your mother;
  Send nasty notes to your boss;
  ...?


-David


``The `#pragma' command is specified in the ANSI standard to have an
arbitrary implementation-defined effect.  In the GNU C preprocessor,
`#pragma' first attempts to run the game `rogue';  if that fails, it
tries to run the game `hack'; if that fails, it tries to run GNU Emacs
displaying the Tower of Hanoi; if that fails, it reports a fatal
error.  In any case, preprocessing does not continue.''
       -- from the manual for the GCC preprocessor (GCC version 1.34)



--
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David Wald                                           wald at theory.lcs.mit.edu
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