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Date:      Wed, 20 Jan 1999 16:47:15 +0200 (EET)
From:      "Jukka A. Ukkonen" <jau@jau.tmt.tele.fi>
To:        questions@FreeBSD.ORG
Subject:   Odd netscape-communicator-4.5 crash when clicking mailto-anchors
Message-ID:  <199901201447.QAA00683@jau.tmt.tele.fi>

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	Howdy!

	Has anyone else seen this happen with communicator-4.5 when
	clicking mailto-anchors?

   400 communicator-4.5 PSIG SIGALRM caught handler=0x9067b0 mask=0x0 code=0x0
   400 communicator-4.5 CALL  gettimeofday(0xefbfbb4c,0)
   400 communicator-4.5 RET   gettimeofday 0
   400 communicator-4.5 CALL  sigreturn(0xefbfbbe8)
   400 communicator-4.5 RET   sigreturn JUSTRETURN
   400 communicator-4.5 PSIG SIGALRM caught handler=0x9067b0 mask=0x0 code=0x0
   400 communicator-4.5 CALL  gettimeofday(0xefbfbacc,0)
   400 communicator-4.5 RET   gettimeofday 0
   400 communicator-4.5 CALL  sigreturn(0xefbfbb68)
   400 communicator-4.5 RET   sigreturn JUSTRETURN
   400 communicator-4.5 PSIG SIGSEGV caught handler=0x908620 mask=0x0 code=0xc
   400 communicator-4.5 CALL  getpid
   400 communicator-4.5 RET   getpid 400/0x190
   400 communicator-4.5 CALL  kill(0x190,0xa)
   400 communicator-4.5 PSIG  SIGBUS SIG_DFL
   400 communicator-4.5 NAMI  "communicator-4.5.core"

	First it gets a segmentation violation, tries to recover from
	that one, and immediately (and rightfully) gets also a bus error.

	In general it is rather hard to recover from SIGSEGV, because
	there is nothing much else to do, but a stack unwind, which
	may fail, because the stack frames are already messed up.
	So, the second SIGBUS is to be expected, but why does it generate
	the SIGSEGV?

	Oops, I almost forgot this, but the binary is the one available
	among 2.2.8 packages at ftp.freebsd.org. I did not compile it
	locally myself.

	Any tips and ideas would be welcome.


	Cheers,
		// jau
.---  ..-  -.-  -.-  .-    .-  .-.-.-    ..-  -.-  -.-  ---  -.  .  -.
  /    Jukka A. Ukkonen,           Internet Services R&D / Sonera Ltd.
 /__   M.Sc. (sw-eng & cs)                     (Phone) +358-2040-4025
   /   Internet: Jukka.Ukkonen@sonera.fi         (Fax) +358-2040-64724
  /    Internet: jau@iki.fi                   (Mobile) +358-400-606671
 v     Internet: ukkonen@nic.funet.fi       (Home&Fax) +358-9-6215280

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