patch 8.0.0618: NFA regex engine handles [0-z] incorrectly
Problem: NFA regex engine handles [0-z] incorrectly.
Solution: Return at the right point. (James McCoy, closes #1703)
diff --git a/src/regexp_nfa.c b/src/regexp_nfa.c
index 120861a..c490acb 100644
--- a/src/regexp_nfa.c
+++ b/src/regexp_nfa.c
@@ -628,37 +628,39 @@
config |= CLASS_o9;
break;
}
- else
if (*(p + 2) == '7')
{
config |= CLASS_o7;
break;
}
+ return FAIL;
+
case 'a':
if (*(p + 2) == 'z')
{
config |= CLASS_az;
break;
}
- else
if (*(p + 2) == 'f')
{
config |= CLASS_af;
break;
}
+ return FAIL;
+
case 'A':
if (*(p + 2) == 'Z')
{
config |= CLASS_AZ;
break;
}
- else
if (*(p + 2) == 'F')
{
config |= CLASS_AF;
break;
}
- /* FALLTHROUGH */
+ return FAIL;
+
default:
return FAIL;
}