Re: longjmp clobber warnings are utterly broken in modern gcc

On 2015-01-25 15:40:10 -0500, Tom Lane wrote:
> Greg Stark <stark@mit.edu> writes:
> > Perhaps Clang has a more useful warning?
> 
> Clang, at least the version on my Mac, doesn't warn either with the
> settings we normally use, and it doesn't have -Wclobber at all.
> I tried turning on -Weverything, and it still didn't complain.
> (It did generate incorrect code though, so it's no better than gcc
> in that respect.)

Even a pretty recent (3.6-rc1) clang doesn't warn. It generates lots of
useful warnings, but nothing about longjmp clobbers.

Greetings,

Andres Freund

-- 
 Andres Freund	                   http://www.2ndQuadrant.com/
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