> From: Ryan Bloom [mailto:[EMAIL PROTECTED] > > > From: Ulrich Drepper [mailto:[EMAIL PROTECTED] > > > > On Tue, 2002-07-16 at 17:49, Blair Zajac wrote: > > > > > We don't need to make a copy of errno. > > > > Oh yes, we do. When it comes to interaction with the C library you > can > > believe me. errno is no simple variable on almost all systems. So, > use > > the patch as I wrote it, please. > > You most definitely do not need to make a copy of errno. As proof, we > don't make copies of it anywhere in APR, and it works on every platform > we have tried. > > While errno is not a simple variable, compilers are smart enough to > treat it as if it is a simple variable, so just 'return errno' works > everywhere.
BTW, I thought of this after I hit send. Errno MUST be treated as a simple variable, or all of the older apps that used it as such would break with new compilers. Ryan
