Hi, all-- On Nov 27, 2013, at 10:10 AM, Paul Eggert <egg...@cs.ucla.edu> wrote: > On 11/27/2013 09:05 AM, Joerg Schilling wrote: >> If you however like to write portable code, you cannot expect >> something like ignore_value() to be available. > > ignore_value is free software, is simple, > and is quite portable in practice > -- more portable than casting to 'void' is, > anyway. It's not really a contest.
With respect, folks who want to pull in gnulib for ignore_value() simply in order to write portable ANSI-C code are far more likely to benefit from Joerg's advice and experience in writing portable code-- code which does _not_ assume GCC & gnulib-- than they are likely to be correct about the relative portability of code to non-GNU platforms which don't come with gnulib. Failing that, if one doesn't care what K&R says and prefers non-standard GNU extensions to re-implement what was already in ANSI-C, fine, but let's not pretend that casting to void hasn't been documented for literally 25+ years. The C Programming Language, 2nd Edition, Kernighan & Richie, 1988, page 213: "A 6.7 Void [ ... ] An expression may be converted to type void by a cast. For example, a void cast documents the discarding of a function call used as an expression statement." Regards, -- -Chuck
