[TUHS] Happy birthday, Dennis Ritchie! [ really sun vs dec/apollo --> X and NeWS ]

Ian Zimmerman itz at very.loosely.org
Fri Sep 15 06:50:58 AEST 2017


On 2017-09-14 15:54, Steve Nickolas wrote:

> You got perror(), use it (not you)... >_>
> 
> All my code that outputs error messages for stuff in the C library
> uses perror(), so a typical error might be "foo: cannot open file bar:
> No such file or directory", with the last part coming from the C
> runtime itself.

This only works if you call libc directly, or if the code you call
(including your own) reuses libc errno codes.  If you deal with libfoo,
libfoo has its own error codes, and has no perror-like function, you
must write your own :(

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