Fix trace-collection.h: No such file or directory that build code with libbabeltrace

[babeltrace.git] / types / variant.c

diff --git a/types/variant.c b/types/variant.c
index 30ef3d8aeca45954a13e0cb86b13ba8e2fd97799..faf70dde200e6bbff757ecc889e1132e5dca5cde 100644 (file)
--- a/types/variant.c
+++ b/types/variant.c
@@ -3,7 +3,9 @@
  *
  * BabelTrace - Variant Type Converter
  *
- * Copyright 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
+ *
+ * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -18,6 +20,7 @@
 
 #include <babeltrace/compiler.h>
 #include <babeltrace/format.h>
+#include <babeltrace/types.h>
 #include <errno.h>
 
 static
@@ -271,11 +274,18 @@ void untagged_variant_declaration_add_field(struct declaration_untagged_variant
 struct declaration_field *
 untagged_variant_declaration_get_field_from_tag(struct declaration_untagged_variant *untagged_variant_declaration, GQuark tag)
 {
-       unsigned long index;
+       gpointer index;
+       gboolean found;
 
-       index = (unsigned long) g_hash_table_lookup(untagged_variant_declaration->fields_by_tag,
-                                                   (gconstpointer) (unsigned long) tag);
-       return &g_array_index(untagged_variant_declaration->fields, struct declaration_field, index);
+       found = g_hash_table_lookup_extended(
+                               untagged_variant_declaration->fields_by_tag,
+                               (gconstpointer) (unsigned long) tag, NULL, &index);
+
+       if (!found) {
+               return NULL;
+       }
+
+       return &g_array_index(untagged_variant_declaration->fields, struct declaration_field, (unsigned long)index);
 }
 
 /*