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John D. Bell jdb at systemsartisans.com
Mon Jun 18 23:49:10 UTC 2018

I've not looked at the build system configuration *at all* closely
(perhaps a more accurate reading would be "at all"), but can't you just
configure it to not use the offending -W switch when analyzing/compiling
the parser's C code?

  - *John D. Bell*

On 06/18/2018 04:37 PM, Eric S. Raymond via devel wrote:
> Hal Murray <hmurray at megapathdsl.net>:
>> devel at ntpsec.org said:
>>>> It only generates warnings on a few systems.  I don't see why not
>>>> on the  others.   ??
>>> I looked at the code. Noting mysterious or suspcious there; has to be some
>>> kind of compiler version-skew issue. 
>> Or a glitch in my brain.
>> I'm seeing it now in modern systems.
> Ah, now that's the kind of error pattern I *expect*  from Bison parsers.
> The underlying problem is that the C in Bison parser skeletons is
> really archaic. It dates from times when not even the value of
> procedural encapsulation was fully understood - thus all those ugly
> globals hanging out in front of God and everybody.
> It's not actually in the least difficult to design a skeleton that
> gets this right.  I did it once.  The point is that that warning is nothing
> we're doing wrong, it's GCC correctly noticing that the skeleton code kinda
> sucks, and we probably *would* have to build a custom skeleton to
> fix it.  I have seen this movie before.

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