1 files changed, 3 insertions, 0 deletions
diff --git a/py/vstr.c b/py/vstr.c
index 869b27805..91cd7f584 100644
--- a/py/vstr.c
+++ b/py/vstr.c
@@ -50,6 +50,9 @@ void vstr_init(vstr_t *vstr, size_t alloc) {
 // Init the vstr so it allocs exactly enough ram to hold a null-terminated
 // string of the given length, and set the length.
 void vstr_init_len(vstr_t *vstr, size_t len) {
+    if(len == SIZE_MAX) {
+        m_malloc_fail(len);
+    }
     vstr_init(vstr, len + 1);
     vstr->len = len;
 }