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- Path: sparky!uunet!spool.mu.edu!uwm.edu!linac!att!att!allegra!alice!ark
- From: ark@alice.att.com (Andrew Koenig)
- Newsgroups: comp.std.c++
- Subject: Re: Zero-length structures and pointer comparisons
- Message-ID: <24392@alice.att.com>
- Date: 12 Dec 92 06:25:32 GMT
- Article-I.D.: alice.24392
- References: <9234423.15066@mulga.cs.mu.OZ.AU> <1992Dec10.121200.18889@ucc.su.OZ.AU> <9234601.10277@mulga.cs.mu.OZ.AU> <1992Dec11.231131.10956@microsoft.com>
- Reply-To: ark@alice.UUCP ()
- Organization: AT&T Bell Laboratories, Murray Hill NJ
- Lines: 15
-
- In article <1992Dec11.231131.10956@microsoft.com> jimad@microsoft.com (Jim Adcock) writes:
-
- > So that taking the address of a nested function in different scopes
- > causes differing trampolines to be created, and differing pointers returned?
-
- It shouldn't need to do that. At most one trampoline is ever necessary
- for a given nested function during its lifetime, namely the one that
- binds the lexically surrounding context that was current when the
- block containing the definition of that function was entered.
-
- Moreover, that trampoline address is unique until the corresponding
- function has gone out of scope, at which point the address is moot.
- --
- --Andrew Koenig
- ark@europa.att.com
-