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Re: folding STRING_CST + INTEGER_CST

From: Chris Lattner <sabre at nondot dot org>
To: Tim Hollebeek <tim at hollebeek dot com>
Cc: gcc at gcc dot gnu dot org
Date: Tue, 25 Jun 2002 15:26:30 -0500 (CDT)
Subject: Re: folding STRING_CST + INTEGER_CST

Tim Hollebeek said:
> Isn't it guaranteed that: strstr("hello"+3, "lo") != "lo" ?

No.  The C standard allows (but does not require) the compiler to 
"recycle" memory for string contents, allowing them to overlap.  Thus it's 
possible that:

  ("hello"+3 == "lo")

-Chris

http://www.nondot.org/~sabre/os/
http://www.nondot.org/~sabre/Projects/

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