Re: [Haskell-cafe] <<loop>> error message

On Sat, Jun 22, 2013 at 06:09:58AM +0300, Mihai Maruseac wrote:

On Sat, Jun 22, 2013 at 12:41 AM, Omari Norman wrote:

...

I compiled some code with GHC 7.6.3 that produces a simple error at runtime

myProgramName: <<loop>>

At which point the program exits with code 1.

Is there documentation for this error anywhere? Does it mean I have some infinite loop in my code somewhere? If so, does GHC catch all infinite loops? I have never gotten this error before. Thanks.

Hi,

Indeed, you have an infinite loop in your code. However, not all infinite loops are catcheable by the mechanism employed there, it would be very hard to do so.

Some are even impossible to catch at all, a.k.a. the Halting Problem.