[Out_of_Characte]

Error handling was already mentioned ITT. Goto use seems like a litmus test for bad programming. The presence of it doesn't prove bad programmings but lots of goto statements could be reasonably be expected to be replaced with safer switch statements. Extremely nested functions are another area that is best served with a goto. Breaking out of many functions has performance implications I believe.

[viraptor]

The question was about performance, not necessarily other aspects.