grep branch, master, updated. v2.12-14-g34e0ada

[Paul Eggert]

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http://git.savannah.gnu.org/cgit/grep.git/commit/?id=34e0adabf0cd98eb4d1c4a929acf0b8238fcfbbc


commit 34e0adabf0cd98eb4d1c4a929acf0b8238fcfbbc
Author: Paul Eggert <address@hidden>
Date:   Wed May 16 10:23:04 2012 -0700

    grep: avoid nominal integer overflow
    
    * src/dfa.c (add_utf8_anychar): Avoid signed integer overflow.
    Although this works on all platforms we know about, strictly
    speaking the behavior is undefined, and Sun C 5.8 warns about it.

diff --git a/src/dfa.c b/src/dfa.c
index a7e263a..df73a1a 100644
--- a/src/dfa.c
+++ b/src/dfa.c
@@ -1630,7 +1630,7 @@ add_utf8_anychar (void)
   static const charclass utf8_classes[5] = {
     {0, 0, 0, 0, ~0, ~0, 0, 0}, /* 80-bf: non-lead bytes */
     {~0, ~0, ~0, ~0, 0, 0, 0, 0},       /* 00-7f: 1-byte sequence */
-    {0, 0, 0, 0, 0, 0, 0xfffffffcU, 0}, /* c2-df: 2-byte sequence */
+    {0, 0, 0, 0, 0, 0, ~3, 0},          /* c2-df: 2-byte sequence */
     {0, 0, 0, 0, 0, 0, 0, 0xffff},      /* e0-ef: 3-byte sequence */
     {0, 0, 0, 0, 0, 0, 0, 0xff0000}     /* f0-f7: 4-byte sequence */
   };

-----------------------------------------------------------------------

Summary of changes:
 src/dfa.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)


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