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From: mec.gnu@mindspring.com (Michael Elizabeth Chastain)
To: jimb@redhat.com, mec.gnu@mindspring.com
Cc: drow@false.org, eliz@gnu.org, gdb@sources.redhat.com, rolandz@poczta.fm
Subject: Re: How to setup a breakpoint on constructor
Date: Sat, 17 Jul 2004 10:09:00 -0000	[thread overview]
Message-ID: <20040716221532.0708C4B104@berman.michael-chastain.com> (raw)

jimb> If I remember right, the use of separate complete and base
jimb> constructors is an ABI requirement; the compiler doesn't have the
jimb> option of just generating whatever code it likes.

The ABI does require separate names.

If I recall correctly, Apple implemented this by having separate names
for base ctor and complete ctor (as required by the ABI) and then having
them call a unified constructor.

Gcc optimization can reduce calls from {base,complete}-ctor to
unified-ctor, from call instructions to jump instructions.

Then the debugger just puts ctor breakpoints on the
unified-ctor.

  http://gcc.gnu.org/ml/gcc-patches/2002-08/msg00354.html

Apple folks, have I got that right?

Michael C


             reply	other threads:[~2004-07-16 22:15 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-07-17 10:09 Michael Elizabeth Chastain [this message]
  -- strict thread matches above, loose matches on Subject: below --
2004-07-18 19:29 Michael Elizabeth Chastain
2004-07-19  3:58 ` Eli Zaretskii
2004-07-17 23:17 Michael Elizabeth Chastain
2004-07-18  5:05 ` Eli Zaretskii
2004-07-18 18:44   ` Daniel Jacobowitz
2004-07-18 19:03     ` Eli Zaretskii
2004-07-19  3:22       ` Daniel Jacobowitz
2004-07-19 14:51         ` Eli Zaretskii
2004-07-16 19:59 Michael Elizabeth Chastain
2004-07-16 22:15 ` Jim Blandy
2004-07-17 14:30 ` Eli Zaretskii
2004-07-17 14:54   ` Daniel Jacobowitz
2004-07-15 13:55 Michael Elizabeth Chastain
2004-07-15 14:09 ` Daniel Jacobowitz
2004-07-16 11:11   ` Eli Zaretskii
2004-07-16 14:27     ` Daniel Jacobowitz
2004-07-17 10:30       ` Eli Zaretskii
2004-07-15 11:31 Michael Elizabeth Chastain
2004-07-16 13:17 ` Roland Zerek
2004-07-15 10:30 Roland Zerek

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