Fix null ptr deref on TDB_TRACE with internal db.

diff --git a/ccan/tdb/open.c b/ccan/tdb/open.c
index 4a1cb235e271228564038c6173b1056b21573be1..69885284c55d6abfce78b4d15d9b126a442d8ea1 100644 (file)
--- a/ccan/tdb/open.c
+++ b/ccan/tdb/open.c
@@ -153,9 +153,6 @@ struct tdb_context *tdb_open_ex(const char *name, int hash_size, int tdb_flags,
        unsigned char *vp;
        uint32_t vertest;
        unsigned v;
        unsigned char *vp;
        uint32_t vertest;
        unsigned v;

-#ifdef TDB_TRACE
-       char tracefile[strlen(name) + 32];
-#endif

 
        if (!(tdb = (struct tdb_context *)calloc(1, sizeof *tdb))) {
                /* Can't log this */
 
        if (!(tdb = (struct tdb_context *)calloc(1, sizeof *tdb))) {
                /* Can't log this */


@@ -322,12 +319,17 @@ struct tdb_context *tdb_open_ex(const char *name, int hash_size, int tdb_flags,
        }
 
 #ifdef TDB_TRACE
        }
 
 #ifdef TDB_TRACE

-       sprintf(tracefile, "%s.trace.%u", name, getpid());
-       tdb->tracefd = open(tracefile, O_WRONLY|O_CREAT|O_EXCL, 0600);
-       if (tdb->tracefd < 0)
-               goto fail;
-       tdb_enable_seqnum(tdb);
-       tdb_trace_open(tdb, "tdb_open", hash_size, tdb_flags, open_flags);
+       {
+               char tracefile[strlen(name) + 32];
+
+               sprintf(tracefile, "%s.trace.%u", name, getpid());
+               tdb->tracefd = open(tracefile, O_WRONLY|O_CREAT|O_EXCL, 0600);
+               if (tdb->tracefd < 0)
+                       goto fail;
+               tdb_enable_seqnum(tdb);
+               tdb_trace_open(tdb, "tdb_open", hash_size, tdb_flags,
+                              open_flags);
+       }

 #endif
 
  internal:
 #endif
 
  internal: