Paul Edwards wrote in a message to Daniel Doran:

DD>  3: , char **envp   -- 3 arguments for main() is a System V Unix 
DD>                        convention, but I have yet to see a C 
DD>                        compiler that doesn't support it.

 PE> I'm pretty sure IBM C/370 V2.0 didn't support it, depending
 PE> on what you call "support".  It is likely you can add an
 PE> extra 5 parameters to the end of main, with very few if any
 PE> compilers actually giving you a compile *error*.

The S/370 is a special case, since there is no hardware stack and it is
therefore impossible to overrun it on function entry.  Under OS/2, the
ENTER machine instruction is usually used to allocate stack space; in
16-bit code, where the segments are byte-granular, this is enforced.
 
-- Mike


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