From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Sat, 18 Sep 2004 01:23:12 +0000 (+0000)
Subject: Fix memory leak in tokenize_file, per report from Vadim Passynkov.
X-Git-Url: http://git.postgresql.org/gitweb/static/gitweb.js?a=commitdiff_plain;h=3b949d8c92fa44f64658c441fd62f2063fda93e2;p=users%2Fbernd%2Fpostgres.git

Fix memory leak in tokenize_file, per report from Vadim Passynkov.
---

diff --git a/src/backend/libpq/hba.c b/src/backend/libpq/hba.c
index 0f508e9102..9532ab65f5 100644
--- a/src/backend/libpq/hba.c
+++ b/src/backend/libpq/hba.c
@@ -168,6 +168,9 @@ next_token(FILE *fp, char *buf, const int bufsz)
  *	 Tokenize file and handle file inclusion and comma lists. We have
  *	 to  break	apart  the	commas	to	expand	any  file names then
  *	 reconstruct with commas.
+ *
+ * The result is always a palloc'd string.  If it's zero-length then
+ * we have reached EOL.
  */
 static char *
 next_token_expand(FILE *file)
@@ -333,6 +336,8 @@ tokenize_file(FILE *file)
 		{
 			/* we are at real or logical EOL, so force a new line List */
 			next_line = NIL;
+			/* Don't forget to pfree the next_token_expand result */
+			pfree(buf);
 		}
 
 		/* Advance line number whenever we reach EOL */