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Subject: Re: a libssh2 release soon

Re: a libssh2 release soon

From: Simon Josefsson <simon_at_josefsson.org>
Date: Tue, 28 Jul 2009 13:33:41 +0200

Daniel Stenberg <daniel_at_haxx.se> writes:

> On Tue, 28 Jul 2009, Simon Josefsson wrote:
>
>> In both places the function code is very long and takes time to
>> read, so it isn't immediately obvious that the use is safe (it
>> probably is). But setting the variable to NULL at initialization
>> silence the warning and appears safer to me. Objections to pushing
>> this?
>
> I'm in favour.

I've pushed the patch.

> Fixing warnings is a worthy task!

I think there is a limit to it, though. Sometimes the warnings are
stupid and fixing them results in slower and/or worse code. Sometime
the warnings are caused by broken system headers. Where to draw the
line is largely a personal preference, I suspect. My preference is to
attempt to silence all warnings or file bugs on the compiler/system
about problems, but sometimes this can be painful.

FWIW, there are some other warnings I didn't care to investigate. They
only happens with i586-mingw32msvc-gcc (v4.2.1).

kex.c:1024: warning: dereferencing type-punned pointer will break strict-aliasing rules
kex.c:1070: warning: dereferencing type-punned pointer will break strict-aliasing rules
kex.c:1809: warning: dereferencing type-punned pointer will break strict-aliasing rules
userauth.c:558: warning: dereferencing type-punned pointer will break strict-aliasing rules
userauth.c:734: warning: pointer targets in assignment differ in signedness
userauth.c:736: warning: pointer targets in assignment differ in signedness
userauth.c:738: warning: pointer targets in assignment differ in signedness
userauth.c:1081: warning: pointer targets in assignment differ in signedness
userauth.c:1083: warning: pointer targets in assignment differ in signedness
userauth.c:1085: warning: pointer targets in assignment differ in signedness

/Simon
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Received on 2009-07-28

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