Tyson Key wrote:
> Hi,
> I'm unsure if this is the best venue to report the issue, but is
> anyone else having problems building a current SVN snapshot of
> Wireshark on Fedora 11?
>
> Currently, I'm able to complete most of the "make" process, before
> attempting to build the ICMPv6 dissector fails with the following:
> cc1: warnings being treated as errors
> packet-icmpv6.c: In function ‘dissect_icmpv6’:
> packet-icmpv6.c:1580: error: dereferencing pointer ‘ni’ does break
> strict-aliasing rules
> packet-icmpv6.c:1562: error: dereferencing pointer ‘ni’ does break
> strict-aliasing rules
> packet-icmpv6.c:1561: error: dereferencing pointer ‘ni’ does break
> strict-aliasing rules
> packet-icmpv6.c:1560: note: initialized from here
Yep: I get the same error when I compile with GCC v4.4.1 (on my
Fedora 11 system) if I use the -O2 option. (I normally use -O0).
From the GCC documentation:
`-fstrict-aliasing'
<snip>
The `-fstrict-aliasing' option is enabled at levels `-O2', `-O3',
`-Os'.
I'll see what I can do to change the icmpv6 code ....
(Do you have any suggestions ?)
(PS: You can, of course, temporarily use -fno-strict-aliasing).
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