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egcs miscompiling ipfwadm ?
- To: egcs Mailing List <egcs at cygnus dot com>
- Subject: egcs miscompiling ipfwadm ?
- From: "B. James Phillippe" <bryan at terran dot org>
- Date: Sat, 11 Jul 1998 00:45:27 -0700 (PDT)
- Organization: Terran.ORG/LinuxWorld.NET
Hello,
I've run up against a wall trying to figure this out. I have a
RedHat-5.1 Alphalinux box running egcs-1.0.3a and egcs-2.91.47 (in
/usr/local). The ipfwadm that was distributed with RedHat was compiled
against egcs-1.0.2. It, and any copy of ipfwadm I rebuild (with any of
the egcs mentioned here) fails to operate. The call to setsockopt fails.
However, the ipfwadm distributed with RedHat-5.0 (compiled against
gcc-2.7.2.3) *does* work properly, though it generates an unaligned trap.
I've compared the source from both versions and they are identical. I have
trouble believing that all versions of egcs would miscompile a simple tool
like ipfwadm. My *kernel* is built with egcs-1.0.3a and I have no
troubles. But are there any suggestions you can give me for tracking this
puzzling bug? Here is the difference in strace:
egcs:
setsockopt(3, IPPROTO_IP321, [0], 96) = -1 EINVAL (Invalid argument)
gcc-2:
setsockopt(3, IPPROTO_IP321, [0], 112) = 0
I'm not very crafty with gdb yet, but I'm trying. Any advice would be
greatly appreciated.
thanks,
-bp
--
B. James Phillippe <bryan@terran.org>
Linux Software Engineer, WGT Inc.
http://earth.terran.org/~bryan