Fix \) in (*verb) "name" bug.

ChangeLog

@@ -376,6 +376,10 @@ of a pattern is no longer transferred to the options that are returned by
 PCRE2_INFO_ALLOPTIONS. In fact, this was an anachronism that should have 
 changed when the effects of those options were all moved to compile time.
 
+109. An escaped closing parenthesis in the "name" part of a (*verb) when 
+PCRE2_ALT_VERBNAMES was set caused pcre2_compile() to malfunction. This bug
+was found by the LLVM fuzzer.
+
 
 Version 10.20 30-June-2015
 --------------------------

src/pcre2_compile.c

@@ -2978,6 +2978,7 @@ Arguments:
   ptrptr        pointer to the input pointer
   codeptr       pointer to the compiled code pointer
   errorcodeptr  pointer to the error code
+  options       the options bits
   utf           TRUE if processing UTF
   cb            compile data block
 
@@ -3375,10 +3376,29 @@ for (; ptr < cb->end_pattern; ptr++)
         {
         if ((options & PCRE2_NO_AUTO_CAPTURE) == 0) cb->bracount++;
         }
-      else  /* (*something) - just skip to closing ket */
+
+      /* (*something) - just skip to closing ket unless PCRE2_ALT_VERBNAMES is
+      set, in which case we have to process escapes in the string after the
+      name. */
+
+      else
         {
         ptr += 2;
-        while (ptr < cb->end_pattern && *ptr != CHAR_RIGHT_PARENTHESIS) ptr++;
+        while (MAX_255(*ptr) && (cb->ctypes[*ptr] & ctype_word) != 0) ptr++;
+        if (*ptr == CHAR_COLON)
+          {
+          ptr++;
+          if ((options & PCRE2_ALT_VERBNAMES) != 0)
+            {
+            if (process_verb_name(&ptr, NULL, &errorcode, options, utf, cb) < 0)
+              goto FAILED;
+            }
+          else
+            {
+            while (ptr < cb->end_pattern && *ptr != CHAR_RIGHT_PARENTHESIS)
+              ptr++;
+            }
+          }
         nest_depth--;
         }
       }

testdata/testinput2

@@ -4735,4 +4735,6 @@ a)"xI
 /#comment
 (?-x):?/extended
 
+/(8(*:6^\x09x\xa6l\)6!|\xd0:[^:|)\x09d\Z\d{85*m(?'(?<1!)*\W[*\xff]!!h\w]*\xbe;/alt_bsux,alt_verbnames,allow_empty_class,dollar_endonly,extended,multiline,never_utf,no_dotstar_anchor,no_start_optimize
+
 # End of testinput2 

testdata/testoutput2

@@ -15054,4 +15054,7 @@ Subject length lower bound = 0
 /#comment
 (?-x):?/extended
 
+/(8(*:6^\x09x\xa6l\)6!|\xd0:[^:|)\x09d\Z\d{85*m(?'(?<1!)*\W[*\xff]!!h\w]*\xbe;/alt_bsux,alt_verbnames,allow_empty_class,dollar_endonly,extended,multiline,never_utf,no_dotstar_anchor,no_start_optimize
+Failed: error 124 at offset 49: letter or underscore expected after (?< or (?'
+
 # End of testinput2