Re: mktime() failure vs 31-DEC-1969 23:59:59 GMT

Another possibility is to save away the original tm structure; if mktime returns -1, bump the tm_sec value by 1, call mktime again, and see if it returns zero.

This still doesn't tell me whether the -1 return from mktime() meant that the time was not representable. It does tell me whether it is representable one second later. If a particular implementation of mktime() doesn't support times before the Epoch (and that seems okay as far as the standards go), then a return of 0 resulting from bumping the tm_sec up by 1 would lead me to the wrong conclusion concerning my original call. An errno would really be helpful here. It's a shame the standards don't define one. - Tom