From: Ben Pfaff <blp@cs.stanford.edu>
Date: Sat, 9 Oct 2021 16:32:02 +0000 (-0700)
Subject: macro: Fix memory leak expanding !DO loop over list.
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?p=pspp;a=commitdiff_plain;h=af630812b8f5738d1574aae723034601ecc7307b

macro: Fix memory leak expanding !DO loop over list.

Found by Address Sanitizer.
---

diff --git a/src/language/lexer/macro.c b/src/language/lexer/macro.c
index 62d060aad2..bced649ec3 100644
--- a/src/language/lexer/macro.c
+++ b/src/language/lexer/macro.c
@@ -1836,6 +1836,7 @@ macro_expand_do (const struct macro_token *tokens, size_t n_tokens,
 
           macro_expand (p, do_end - p, &subme, exp);
         }
+      macro_tokens_uninit (&items);
       return do_end - tokens + 1;
     }
   else if (p < end && p->token.type == T_EQUALS)