fixup! Guard against data loss checking out a huge file

This commit tries to validate the `size` value before it is read. Let's
redo it.

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

entry.c

@@ -85,18 +85,7 @@ static int create_file(const char *path, unsigned int mode)
 void *read_blob_entry(const struct cache_entry *ce, size_t *size)
 {
 	enum object_type type;
-	void *blob_data;
-	unsigned long trunc_size = (unsigned long)*size;
-
-	/*
-	 * On 64-bit Windows, unsigned long holds less than size_t. It should be very,
-	 * very rare that a file larger than 2^32 bytes ends up in a repository, but in
-	 * case it does, this dies rather than write corrupt data to the workdir.
-	 */
-	if (trunc_size != *size)
-		die_errno("object too large to read on this platform");
-
-	blob_data = read_object_file(&ce->oid, &type, (unsigned long *)size);
+	void *blob_data = read_object_file(&ce->oid, &type, (unsigned long *)size);
 
 	if (blob_data) {
 		if (type == OBJ_BLOB)