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builtins.c (c_strlen): Treat an offset too large for a HOST_WIDE_INT as out of range.

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* builtins.c (c_strlen): Treat an offset too large for a
	HOST_WIDE_INT as out of range.

From-SVN: r45550
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Matt Kraai 2001-09-11 17:10:15 +00:00 committed by Matt Kraai
parent 4262e6231a
commit 1de3d87705
2 changed files with 8 additions and 1 deletions
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gcc/ChangeLog
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@ -1,3 +1,8 @@
2001-10-11 Matt Kraai <kraai@alumni.carnegiemellon.edu>
* builtins.c (c_strlen): Treat an offset too large for a
HOST_WIDE_INT as out of range.
Tue Sep 11 18:57:47 CEST 2001 Jan Hubicka <jh@suse.cz>
* basic-block.h (EDGE_CRITICAL): Remove; renumber other flags.

4
gcc/builtins.c
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@ -265,8 +265,10 @@ c_strlen (src)
/* We have a known offset into the string. Start searching there for
a null character if we can represent it as a single HOST_WIDE_INT. */
if (offset_node == 0 || ! host_integerp (offset_node, 0))
if (offset_node == 0)
offset = 0;
else if (! host_integerp (offset_node, 0))
offset = -1;
else
offset = tree_low_cst (offset_node, 0);