Xref: utzoo comp.lang.c:30494 gnu.gcc:1798
Newsgroups: comp.lang.c,gnu.gcc
Path: utzoo!henry
From: henry@zoo.toronto.edu (Henry Spencer)
Subject: Re: Local Variable Storage Scope
Message-ID: <1990Jul24.151530.20772@zoo.toronto.edu>
Organization: U of Toronto Zoology
References: <1990Jul23.230418.15169@uunet!unhd>
Date: Tue, 24 Jul 90 15:15:30 GMT

In article <1990Jul23.230418.15169@uunet!unhd> al@uunet!unhd (Anthony Lapadula) writes:
>           {  int local1[100]; /* some code goes here */  }
>           {  int local2[100]; /* more code goes here */  }
>
>Is the compiler allowed to allocate just enough space for only
>one of the local arrays?  That is, can ``local1'' and ``local2''
>share the same spot on the run-time stack?

Certainly.  local1 exists only inside the first block, local2 exists only
inside the second, so it is perfectly legitimate to re-use the storage that
used to hold local1 for local2.  Mind you, there is no promise that this
will be done.
-- 
NFS:  all the nice semantics of MSDOS, | Henry Spencer at U of Toronto Zoology
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