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-rw-r--r--src/env.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/src/env.c b/src/env.c
index ad0252fb..385ab2f6 100644
--- a/src/env.c
+++ b/src/env.c
@@ -179,6 +179,10 @@ serd_env_qualify(const SerdEnv* const env,
SerdNode* const prefix,
SerdChunk* const suffix)
{
+ if (!env) {
+ return false;
+ }
+
for (size_t i = 0; i < env->n_prefixes; ++i) {
const SerdNode* const prefix_uri = &env->prefixes[i].uri;
if (uri->n_bytes >= prefix_uri->n_bytes) {
@@ -201,6 +205,10 @@ serd_env_expand(const SerdEnv* const env,
SerdChunk* const uri_prefix,
SerdChunk* const uri_suffix)
{
+ if (!env) {
+ return SERD_ERR_BAD_CURIE;
+ }
+
const uint8_t* const colon =
(const uint8_t*)memchr(curie->buf, ':', curie->n_bytes + 1);
if (curie->type != SERD_CURIE || !colon) {
@@ -222,6 +230,10 @@ serd_env_expand(const SerdEnv* const env,
SerdNode
serd_env_expand_node(const SerdEnv* const env, const SerdNode* const node)
{
+ if (!env) {
+ return SERD_NODE_NULL;
+ }
+
switch (node->type) {
case SERD_NOTHING:
case SERD_LITERAL: