Add tests for decode reading too far

1 files changed, 4 insertions, 1 deletions

diff --git a/decode.go b/decode.go
index e42c115..a17a572 100644
--- a/decode.go
+++ b/decode.go
@@ -114,7 +114,10 @@ func (dec *Decoder) stackName() string {
 	return strings.Join(fields, ".")
 }
 
-func Decode(r io.Reader, ptr any) error {
+func Decode(r interface {
+	io.Reader
+	io.RuneScanner // enforce that the reader have .UnreadRune() so that we don't risk reading too far when decoding a number
+}, ptr any) error {
 	return NewDecoder(r).Decode(ptr)
 }