~paulsnar/janet-baseenc commit

4f1a0d9faabc — paulsnar 2 years ago

fix: Buffer capacity calculation for encode

patch browse

1 files changed, 3 insertions(+), 2 deletions(-)

M src/baseenc.c

M src/baseenc.c +3 -2

@@ 10,10 10,11 @@ static Janet Baseenc_base64Encode(int ar
   if (argc > 1) {
     buf = janet_getbuffer(argv, 1);
   } else {
-    buf = janet_buffer((data.len * 4 + 3) / 3);
+    buf = janet_buffer((data.len + 2) / 3 * 4);
   }
 
-  ssize_t len = base_64_encode(&data.bytes[0], (size_t)data.len, &buf->data[0], (size_t)buf->capacity);
+  ssize_t len = base_64_encode(&data.bytes[0], (size_t)data.len,
+    &buf->data[0], (size_t)buf->capacity);
   if (len == -1) {
     janet_panic("buffer overflow");
   }