C Compiler under Unix System VR4

[david d [zoo] zuhn]

>>>>> On 11 Oct 90 22:31:24 GMT, rembo at unisoft.UUCP (Tony Rems) said:

[regarding the S5R4 #machine debate, which is this:

#assert #machine(pdp11)
#if #machine(pdp11) 
...
#endif

Tony> One more thing.  Although I haven't confirmed this, it seem that 
Tony> the #if #machine construct *is* ANSI, but that gcc is not 
Tony> entirely ANSI (even with the -ansi option).

I would say that it is NOT ansi legal, or at least there is NO mention
of #assert (a basic element of this mechanism) in the ANSI standard.
I couldn't find exact wording about additional preprocessing
directives being implementation defined, undefined, or what, but it's
not part of the Standard.

david d [zoo] zuhn		Univ. of Minnesota Dept. of Astronomy
zoo at aps1.spa.umn.edu		      Automated Plate Scanner Project