Wireshark · Wireshark-dev: Re: [Wireshark-dev] Build failure on Linux (GCC 3.4.6)

[Guy Harris <guy@xxxxxxxxxxxx>]

On Aug 4, 2008, at 6:03 AM, Martin Mathieson wrote:

> Unfortunately not.  I can't see what is different between this case  
> and the one in the built-in packet-ethertype.c which may have been  
> used as a template in part for the plugin packet-infiniband.c.

packet-ethertype.c has

	tvbuff_t *volatile next_tvb;

in ethertype(), while packet-infiniband.c has

	tvbuff_t *next_tvb;

in parse_PAYLOAD().  What happens if you change it to

	tvbuff_t *volatile next_tvb;

in parse_PAYLOAD()?

(No, I don't know why it's not failing on the Ubuntu buildbot, unless  
either

	1) you're building for some RISC architecture with more than 16  
registers, and next_tvb doesn't end up in a register on x86-64 but  
does end up in a register on the architecture for which you're building

or

	2) GCC 3.4.6 isn't clever enough to figure out that next_tvb won't  
change between the setjmp and longjmp but the version of GCC on the  
Ubuntu 7.10 buildbot (my Ubuntu 7.10 virtual machine has a  
"prerelease" of GCC 4.1.3) is.)