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-rw-r--r--src/node_syntax.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/node_syntax.c b/src/node_syntax.c
index 626648f6..ff8c32d4 100644
--- a/src/node_syntax.c
+++ b/src/node_syntax.c
@@ -18,6 +18,7 @@
#include "serd/serd.h"
+#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@@ -38,6 +39,8 @@ serd_node_from_syntax_in(const char* const str,
const SerdSyntax syntax,
SerdEnv* const env)
{
+ assert(str);
+
static const char* const prelude =
"_:s <http://www.w3.org/2000/01/rdf-schema#object>";
@@ -72,6 +75,8 @@ serd_node_from_syntax(const char* const str,
const SerdSyntax syntax,
SerdEnv* const env)
{
+ assert(str);
+
if (env) {
return serd_node_from_syntax_in(str, syntax, env);
}
@@ -110,6 +115,8 @@ serd_node_to_syntax(const SerdNode* const node,
const SerdSyntax syntax,
const SerdEnv* const env)
{
+ assert(node);
+
if (env) {
return serd_node_to_syntax_in(node, syntax, env);
}