Re: strict aliasing benefit examples

[Paolo Bonzini]

int f(int *a, float *b)
{
  *a = 1;
  *b = 2.0;
  return *a == 2;
}

Problem: people don't write code that way. (well I hope not)
People declare a few local variables, load them with data via
the pointers, do stuff with the local variables, then save back
the results via the pointers.

So that won't convince many Visual Studio 2005 fans. :-(

Then, the answer is that GCC's stronger aliasing allows you to use one 
line of code instead of three.

Consider that most people can only write at most ~50 SLOC/day (including 
debugging and documentation), with a stunning independence from the 
programming language and programming style.  If you take it with the 
necessary grain of salt, this is quite an argument.

Paolo