From 6c5536ff04afb76002b89c855719bd56e61f0176 Mon Sep 17 00:00:00 2001
From: Victor Kareh <vkareh@redhat.com>
Date: Mon, 8 Jul 2019 20:35:55 -0400
Subject: parserfunc: Return NULL on NOT operation overflow

---
 src/mp-binary.c  | 2 +-
 src/parserfunc.c | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/mp-binary.c b/src/mp-binary.c
index 8836776..d1de597 100644
--- a/src/mp-binary.c
+++ b/src/mp-binary.c
@@ -152,7 +152,7 @@ mp_not(const MPNumber *x, int wordlen, MPNumber *z)
 
     if (!mp_is_positive_integer(x))
     {
-        /* Translators: Error displayed when boolean XOR attempted on non-integer values */
+        /* Translators: Error displayed when boolean NOT attempted on non-integer values */
         mperr(_("Boolean NOT is only defined for positive integers"));
     }
 
diff --git a/src/parserfunc.c b/src/parserfunc.c
index edd34f6..f35e6c5 100644
--- a/src/parserfunc.c
+++ b/src/parserfunc.c
@@ -866,7 +866,8 @@ pf_do_not(ParseNode* self)
     {
         set_error(self->state, PARSER_ERR_OVERFLOW, NULL);
         free(ans);
-        ans = NULL;
+        free(val);
+        return NULL;
     }
     mp_not(val, self->state->options->wordlen, ans);
     free(val);
-- 
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