Fix: check if handle is valid

[babeltrace.git] / lib / trace-handle.c

diff --git a/lib/trace-handle.c b/lib/trace-handle.c
index 6ba3ec208806540e774c784eef151999c12e1c40..050268f67fd97af9ba4eadbaab6055dbc3a09875 100644 (file)
--- a/lib/trace-handle.c
+++ b/lib/trace-handle.c
@@ -52,6 +52,8 @@ const char *bt_trace_handle_get_path(struct bt_context *ctx, int handle_id)
 
        handle = g_hash_table_lookup(ctx->trace_handles,
                        (gpointer) (unsigned long) handle_id);
+       if (!handle)
+               return NULL;
        return handle->path;
 }
 
@@ -61,6 +63,8 @@ uint64_t bt_trace_handle_get_timestamp_begin(struct bt_context *ctx, int handle_
 
        handle = g_hash_table_lookup(ctx->trace_handles,
                        (gpointer) (unsigned long) handle_id);
+       if (!handle)
+               return -1ULL;
        return handle->timestamp_begin;
 }
 
@@ -70,5 +74,7 @@ uint64_t bt_trace_handle_get_timestamp_end(struct bt_context *ctx, int handle_id
 
        handle = g_hash_table_lookup(ctx->trace_handles,
                        (gpointer) (unsigned long) handle_id);
+       if (!handle)
+               return -1ULL;
        return handle->timestamp_end;
 }