add null pointer check

2023-08-13 21:41:32 +02:00 · 2023-08-13 21:41:32 +02:00 · f643be2e99
commit f643be2e99
parent 750a966c62
1 changed files with 1 additions and 0 deletions
--- a/src/mapped.rs
+++ b/src/mapped.rs
@ -7,6 +7,7 @@ use crate::{FilePointer, FileRange, RawFilePointer};
 pub trait ReaderTrait {
    fn read_raw(&self, range: FileRange) -> &[u8];
    fn read<T: FromBytes>(&self, ptr: FilePointer<T>) -> &T {
+        debug_assert!(!ptr.is_null(), "null pointer dereference");
        let bytes = self.read_raw(ptr.range());
        Ref::<_, T>::new(bytes)
            .unwrap_or_else(|| {