updated for version 7.4.051

Problem:    Syntax highlighting a Yaml file causes a crash. (Blake Preston)
Solution:   Copy the pim structure before calling addstate() to avoid it
	    becoming invalide when the state list is reallocated.

Author: brammool

src/regexp_nfa.c

@@ -6458,6 +6458,7 @@ nfa_regmatch(prog, start, submatch, m)
 	    if (add_state != NULL)
 	    {
 		nfa_pim_T *pim;
+		nfa_pim_T pim_copy;
 
 		if (t->pim.result == NFA_PIM_UNUSED)
 		    pim = NULL;
@@ -6531,6 +6532,15 @@ nfa_regmatch(prog, start, submatch, m)
 		    pim = NULL;
 		}
 
+		/* If "pim" points into l->t it will become invalid when
+		 * adding the state causes the list to be reallocated.  Make a
+		 * local copy to avoid that. */
+		if (pim == &t->pim)
+		{
+		    copy_pim(&pim_copy, pim);
+		    pim = &pim_copy;
+		}
+
 		if (add_here)
 		    addstate_here(thislist, add_state, &t->subs, pim, &listidx);
 		else

src/version.c

@@ -738,6 +738,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    51,
 /**/
     50,
 /**/