bug in IRIX 4 C compiler

["Simon Kilvington" <S.R.Kilvington.,at,.soton.ac.uk>]

 hello,
 	this is probably not the right place to post this - so, sorry in
 advance.
 	anyway, onto the problem - it's not serious - the correct code is
 generated - but you get a warning message cuz the compiler gets confused
 about function argument types.
 	the shortest program to demonstrate it is...
 /* bug.c */
 char proc1(char);
 char proc2(char);
 void
 warning(int choice)
 {
    char (*proc)(char);
    proc = (choice) ? proc1 : proc2;
 }
 	when you compile it "cc -c bug.c" the following warnings are
 generated...
 accom: Warning 294: bug.c, line 11: Function has prototyped and
 non-prototyped declarations.  Default promotion of non-prototype form of
 argument 1 does not match prototype: prototype: char is different from
 actual: int
           proc = (choice) ? proc1 : proc2;
        ----------------------------------^
 accom: Warning 196: bug.c, line 11: function prototypes are not
 equivalent; function pointer assignment invalid
           proc = (choice) ? proc1 : proc2;
        ----------------------------------^
 	for some reason it thinks the last argument to "proc1" and
 "proc2" should be an int.
 	if you write...
 if(choice)
    proc = proc1;
 else
    proc = proc2;
 	instead, all is well.
 	the compilers with IRIX 5 and IRIX 6 don't have this trouble,
 and as I said before, the correct code is generated - so it's more
 annoying rather than anything else.
 ---
 Simon Kilvington, srk.,at,.soton.ac.uk