Re: c/10339: strncmp generates imPure code

[Michael Ubell <ubell@mindspring.com>]

The following reply was made to PR optimization/10339; it has been noted by GNATS.

From: Michael Ubell <ubell@mindspring.com>
To: Timothy C Prince <tprince@myrealbox.com>
Cc: falk.hueffner@student.uni-tuebingen.de,  bangerth@ices.utexas.edu, 
 gcc-bugs@gcc.gnu.org,  gcc-gnats@gcc.gnu.org
Subject: Re: c/10339: strncmp generates imPure code
Date: Mon, 07 Apr 2003 12:59:43 -0700

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 Attached is a program that reads 831 unaligned unallocated
 bytes.  I can't actually get it to segv on Solaris because
 I don't know enough about their memory management, but
 I cannot believe this is correct code.
 
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 Content-Type: text/plain;
  name="test.c"
 Content-Transfer-Encoding: 7bit
 Content-Disposition: inline;
  filename="test.c"
 
 char *foo() {
 	char *cp;
 	cp = sbrk(2);
 	*++cp = 0;
 printf("%x\n", cp);
 	return (cp);
 }
 main() {
 	char *name;
 
 	name = foo();
 
 	exit(strncmp("log.\
 	xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \
 	xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \
 	xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \
 	xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \
 	xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \
 	xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \
 	xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \
 	xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \
 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx", name, 1000));
 	
 }
 
 
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