Re: perror.m4 test

[Bruno Haible]

Hi Eric,

Daniel Richard G. wrote:
> > > * "checking whether perror matches strerror": strerror(-1) returns
> > >   an invalid pointer, and attempting to puts() this yields SIGBUS.
> > >   (Wouldn't it be safer to pass EPERM or something similarly
> > >   universal?)
> >
> > This is the purpose of the test: testing whether you can safely pass
> > invalid error number, such as -1, to strerror.
> 
> I thought it was to test that perror() and strerror() gave the
> same output.
> 
> Note that currently, the test passes despite the SIGBUS. It should
> probably check that $? = 0 before comparing stdout vs. stderr.

I'm not sure. This test is about perror(). Should it fail just because
strerror returns an invalid pointer? Eric, what do you think?

Bruno
-- 
In memoriam Thomas Sankara <http://en.wikipedia.org/wiki/Thomas_Sankara>