Another fix to the recent (*ACCEPT) patch. Fixes clusterfuzz 15242.

src/pcre2_compile.c

@@ -2599,10 +2599,20 @@ while (ptr < ptrend)
         errorcode = ERR28;
         goto FAILED;
         }
-      if (!inverbname && after_manual_callout-- <= 0)
+      if (inverbname)
+        {                          /* Don't use PARSED_LITERAL() because it */
+#if PCRE2_CODE_UNIT_WIDTH == 32    /* sets okquantifier. */
+        if (c >= META_END) *parsed_pattern++ = META_BIGVALUE;
+#endif
+        *parsed_pattern++ = c;
+        }
+      else
+        {
+        if (after_manual_callout-- <= 0)
           parsed_pattern = manage_callouts(thisptr, &previous_callout,
             auto_callout, parsed_pattern, cb);
         PARSED_LITERAL(c, parsed_pattern);
+        }
       meta_quantifier = 0;
       }
     continue;  /* Next character */

testdata/testinput2

@@ -5605,4 +5605,6 @@ a)"xI
 
 /(*:\)?/
 
+/(*:\Q \E){5}/alt_verbnames
+
 # End of testinput2

testdata/testoutput2

@@ -16960,6 +16960,9 @@ MK: XX
 /(*:\)?/
 Failed: error 109 at offset 5: quantifier does not follow a repeatable item
 
+/(*:\Q \E){5}/alt_verbnames
+Failed: error 109 at offset 11: quantifier does not follow a repeatable item
+
 # End of testinput2
 Error -70: PCRE2_ERROR_BADDATA (unknown error number)
 Error -62: bad serialized data