# HG changeset patch
# User Bram Moolenaar <bram@vim.org>
# Date 1428931692 -7200
# Node ID 4c4c8a53347b463804ad889f0b154ee0f884928f
# Parent  1218305319188f12db4f5a6adc4705a174f64b1f
patch 7.4.696
Problem:    Not freeing memory when encountering an error.
Solution:   Free the stack before returning. (Eliseo Mart?nez)

diff --git a/src/regexp_nfa.c b/src/regexp_nfa.c
--- a/src/regexp_nfa.c
+++ b/src/regexp_nfa.c
@@ -3156,6 +3156,7 @@ post2nfa(postfix, end, nfa_calc_size)
 		    if (stackp < stack)			\
 		    {					\
 			st_error(postfix, end, p);	\
+			vim_free(stack);		\
 			return NULL;			\
 		    }
 
@@ -3632,10 +3633,16 @@ post2nfa(postfix, end, nfa_calc_size)
 
     e = POP();
     if (stackp != stack)
+    {
+	vim_free(stack);
 	EMSG_RET_NULL(_("E875: (NFA regexp) (While converting from postfix to NFA), too many states left on stack"));
+    }
 
     if (istate >= nstate)
+    {
+	vim_free(stack);
 	EMSG_RET_NULL(_("E876: (NFA regexp) Not enough space to store the whole NFA "));
+    }
 
     matchstate = &state_ptr[istate++]; /* the match state */
     matchstate->c = NFA_MATCH;
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    696,
+/**/
     695,
 /**/
     694,