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On Fri, Sep 22, 2000 at 09:39:54AM -0700, H . J . Lu wrote: > > >From here, I conclude "The glibc functions do not change `errno' when > they succeed." By not saving/restoring errno, we have changed > documented glibc behavior. We should be consistent on it. > One possible glibc code may look like: if (foo (....) == -1) { if (bar (...) == -1) exit (1); switch (errno) { case xxx: break; case xxx: break; default: /* Ooops, unknown error. Quit. */ exit (2); } } Since bar () may change errno now, this perfect valid glibc code may not work right now. I will guess this code will work on most of other Unixes. H.J.
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