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-rw-r--r--src/writer.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/src/writer.c b/src/writer.c
index 5c84b950..c821d904 100644
--- a/src/writer.c
+++ b/src/writer.c
@@ -903,14 +903,15 @@ serd_writer_set_error_sink(SerdWriter* writer,
}
void
-serd_writer_chop_blank_prefix(SerdWriter* writer,
- const uint8_t* prefix)
+serd_writer_chop_blank_prefix(SerdWriter* writer, const uint8_t* prefix)
{
free(writer->bprefix);
writer->bprefix_len = 0;
writer->bprefix = NULL;
- if (prefix) {
- writer->bprefix_len = strlen((const char*)prefix);
+
+ const size_t prefix_len = prefix ? strlen((const char*)prefix) : 0;
+ if (prefix_len) {
+ writer->bprefix_len = prefix_len;
writer->bprefix = (uint8_t*)malloc(writer->bprefix_len + 1);
memcpy(writer->bprefix, prefix, writer->bprefix_len + 1);
}