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http://git.savannah.gnu.org/cgit/grep.git/commit/?id=d8d0bf0895dccf1c541e72f7a75d3cbaf7821a05
commit d8d0bf0895dccf1c541e72f7a75d3cbaf7821a05
Author: Paul Eggert <[email protected]>
Date: Thu Jul 19 13:58:46 2012 -0700
grep: fix ptrdiff/size_t clash
Reported by Jaroslav Å karvada in <http://savannah.gnu.org/bugs/?36883>.
* src/dfasearch.c (EGexecute): Use size_t, not ptrdiff_t, for lengths.
Use regoff_t to store re_match's output, and test it before converting
it to size_t.
diff --git a/src/dfasearch.c b/src/dfasearch.c
index ab30cd5..1121176 100644
--- a/src/dfasearch.c
+++ b/src/dfasearch.c
@@ -215,7 +215,7 @@ EGexecute (char const *buf, size_t size, size_t *match_size,
char eol = eolbyte;
int backref;
regoff_t start;
- ptrdiff_t len, best_len;
+ size_t len, best_len;
struct kwsmatch kwsm;
size_t i, ret_val;
mb_len_map_t *map = NULL;
@@ -343,6 +343,7 @@ EGexecute (char const *buf, size_t size, size_t *match_size,
if (match_words)
while (match <= best_match)
{
+ regoff_t shorter_len = 0;
if ((match == buf || !WCHAR ((unsigned char) match[-1]))
&& (start + len == end - buf - 1
|| !WCHAR ((unsigned char) match[len])))
@@ -352,13 +353,16 @@ EGexecute (char const *buf, size_t size, size_t
*match_size,
/* Try a shorter length anchored at the same place. */
--len;
patterns[i].regexbuf.not_eol = 1;
- len = re_match (&(patterns[i].regexbuf),
- buf, match + len - beg, match - buf,
- &(patterns[i].regs));
- if (len < -1)
+ shorter_len = re_match (&(patterns[i].regexbuf),
+ buf, match + len - beg,
+ match - buf,
+ &(patterns[i].regs));
+ if (shorter_len < -1)
xalloc_die ();
}
- if (len <= 0)
+ if (0 < shorter_len)
+ len = shorter_len;
+ else
{
/* Try looking further on. */
if (match == end - 1)
-----------------------------------------------------------------------
Summary of changes:
src/dfasearch.c | 16 ++++++++++------
1 files changed, 10 insertions(+), 6 deletions(-)
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