Add casts to avoid compiler warnings.

git-svn-id: svn://vcs.exim.org/pcre/code/trunk@476 2f5784b3-3f2a-0410-8824-cb99058d5e15

3 files changed, 5 insertions, 2 deletions

diff --git a/ChangeLog b/ChangeLog
index 64588db..704daca 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -53,6 +53,9 @@ Version 8.01 11-Dec-09
     instead, thus avoiding the use of floating point arithmetic. (There is no 
     other use of FP in PCRE.) If int64_t is not found, the fallback is to 
     double. 
+    
+9.  Added two casts to avoid signed/unsigned warnings from VS Studio Express 
+    2005 (difference between two addresses compared to an unsigned value).
        
 
 
diff --git a/pcre_dfa_exec.c b/pcre_dfa_exec.c
index 11a3fba..c6bea00 100644
--- a/pcre_dfa_exec.c
+++ b/pcre_dfa_exec.c
@@ -2991,7 +2991,7 @@ for (;;)
       bytes to avoid spending too much time in this optimization. */
 
       if (study != NULL && (study->flags & PCRE_STUDY_MINLEN) != 0 &&
-          end_subject - current_subject < study->minlength)
+          (pcre_uint32)(end_subject - current_subject) < study->minlength)
         return PCRE_ERROR_NOMATCH;
 
       /* If req_byte is set, we know that that character must appear in the
diff --git a/pcre_exec.c b/pcre_exec.c
index 899b92a..3daa38f 100644
--- a/pcre_exec.c
+++ b/pcre_exec.c
@@ -5572,7 +5572,7 @@ for(;;)
     bytes to avoid spending too much time in this optimization. */
 
     if (study != NULL && (study->flags & PCRE_STUDY_MINLEN) != 0 &&
-        end_subject - start_match < study->minlength)
+        (pcre_uint32)(end_subject - start_match) < study->minlength)
       {
       rc = MATCH_NOMATCH;
       break;