Fix more memory leaks in failure path in buildACLCommands.

We already had one go at this issue in commit d73b7f973db5ec7e, but we
failed to notice that buildACLCommands also leaked several PQExpBuffers
along with a simply malloc'd string.  This time let's try to make the
fix a bit more future-proof by eliminating the separate exit path.

It's still not exactly critical because pg_dump will curl up and die on
failure; but since the amount of the potential leak is now several KB,
it seems worth back-patching as far as 9.2 where the previous fix landed.

Per Coverity, which evidently is smarter than clang's static analyzer.

diff --git a/src/bin/pg_dump/dumputils.c b/src/bin/pg_dump/dumputils.c
index 55509866ff5c692288e8b31074a6912020b381ca..095c50770ba1992734bf5b7b0ceb7d3c699a3651 100644 (file)
--- a/src/bin/pg_dump/dumputils.c
+++ b/src/bin/pg_dump/dumputils.c
@@ -500,6 +500,7 @@ buildACLCommands(const char *name, const char *subname,
                 const char *prefix, int remoteVersion,
                 PQExpBuffer sql)
 {
+   bool        ok = true;
    char      **aclitems;
    int         naclitems;
    int         i;
@@ -570,8 +571,8 @@ buildACLCommands(const char *name, const char *subname,
        if (!parseAclItem(aclitems[i], type, name, subname, remoteVersion,
                          grantee, grantor, privs, privswgo))
        {
-           free(aclitems);
-           return false;
+           ok = false;
+           break;
        }
 
        if (grantor->len == 0 && owner)
@@ -678,7 +679,7 @@ buildACLCommands(const char *name, const char *subname,
 
    free(aclitems);
 
-   return true;
+   return ok;
 }
 
 /*