Minor refactor to avoid compiler warning.

git-svn-id: svn://vcs.exim.org/pcre/code/trunk@1648 2f5784b3-3f2a-0410-8824-cb99058d5e15

2 files changed, 12 insertions, 9 deletions

diff --git a/ChangeLog b/ChangeLog
index 24e35e5..c2c3921 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -81,6 +81,9 @@ Version 8.39 xx-xxxxxx-201x
 
 20. A racing condition is fixed in JIT reported by Mozilla.
 
+21. Minor code refactor to avoid "array subscript is below array bounds" 
+compiler warning.
+
 
 Version 8.38 23-November-2015
 -----------------------------
diff --git a/pcre_compile.c b/pcre_compile.c
index 254c629..ec202fd 100644
--- a/pcre_compile.c
+++ b/pcre_compile.c
@@ -4566,6 +4566,10 @@ for (;; ptr++)
   unsigned int tempbracount;
   pcre_uint32 ec;
   pcre_uchar mcbuffer[8];
+  
+  /* Come here to restart the loop without advancing the pointer. */
+  
+  REDO_LOOP: 
 
   /* Get next character in the pattern */
 
@@ -4712,11 +4716,7 @@ for (;; ptr++)
     /* If we skipped any characters, restart the loop. Otherwise, we didn't see
     a comment. */
 
-    if (ptr > wscptr)
-      {
-      ptr--;
-      continue;
-      }
+    if (ptr > wscptr) goto REDO_LOOP;
     }
 
   /* Skip over (?# comments. We need to do this here because we want to know if
@@ -4857,15 +4857,15 @@ for (;; ptr++)
     if (STRNCMP_UC_C8(ptr+1, STRING_WEIRD_STARTWORD, 6) == 0)
       {
       nestptr = ptr + 7;
-      ptr = sub_start_of_word - 1;
-      continue;
+      ptr = sub_start_of_word;
+      goto REDO_LOOP;
       }
 
     if (STRNCMP_UC_C8(ptr+1, STRING_WEIRD_ENDWORD, 6) == 0)
       {
       nestptr = ptr + 7;
-      ptr = sub_end_of_word - 1;
-      continue;
+      ptr = sub_end_of_word;
+      goto REDO_LOOP;
       }
 
     /* Handle a real character class. */