gcc 4.2 more strict check for "function called through a non-compatible type"

[Gabriel Dos Reis]

Ian Lance Taylor <iant@google.com> writes:

| Andrew Haley <aph@redhat.com> writes:
| 
| > If we make a change for openssh to allow this undefined behaviour,
| > then do we agree to keep it working or not?  If we agree that we will,
| > then we have to at least add some test cases and we have to add some
| > internal documentation to gcc.  If we don't agree to keep it working,
| > then even if we fix it today it may well break in the future.
| 
| As I tried to clarify in a separate message, I don't think we agree to
| keep it working.

if we should agree not to keep it "working", then changing the current
behaviour is pointless.

-= Gaby