Bug#162576: libc6-dev: errno is a function call in non-threaded program
reopen 162576
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On Fri, Sep 27, 2002 at 10:12:09AM -0400, Ben Collins wrote:
>
> # if !defined _LIBC || defined _LIBC_REENTRANT
> /* When using threads, errno is a per-thread value. */
> # define errno (*__errno_location ())
> # endif
>
> Clearly it only gets defined as (*__errno_location ()) if we are not
> _LIBC (not the case for us ever) or _LIBC_REENTRANT is defined.
Most applications are not _LIBC.
> Now, -D_REENTRANT does not assume threads, but it does assume thread
> safe, so the definition is perfectly normal in that case (e.g. a module
> or library that does not use threads, being usable by a threaded program
> should use this). I don't think this is a bug at all.
If you can show me a way of compiling an application where errno is
not set to this function call, then I'll agree with you.
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