commit 873d09e09fdcaceba69c02e8cefdb95cabfc80d9
from: Stefan Sperling <stsp@stsp.name>
via: Thomas Adam <thomas@xteddy.org>
date: Sat Jul 26 10:36:08 2025 UTC

show expected and actual sizes when delta application fails

ok op@

commit - ef7196ff92a36328e82fb8b83228d475ed0155b0
commit + 873d09e09fdcaceba69c02e8cefdb95cabfc80d9
blob - 111ec814bd31c09485d156e50ed2d87e60a2017b
blob + 85fa0ebab042bd2f409b16d11687cda0f2da7a5a
--- lib/delta.c
+++ lib/delta.c
@@ -319,8 +319,10 @@ got_delta_apply_in_mem(uint8_t *base_buf, size_t base_
 	}
 
 	if (err == NULL && *outsize != result_size)
-		err = got_error_msg(GOT_ERR_BAD_DELTA,
-		    "delta application result size mismatch");
+		err = got_error_fmt(GOT_ERR_BAD_DELTA,
+		    "delta application result size mismatch: actual: %zd "
+		    "expected: %llu", *outsize, result_size);
+
 	return err;
 }
 
@@ -386,8 +388,9 @@ got_delta_apply(FILE *base_file, const uint8_t *delta_
 	}
 
 	if (err == NULL && *outsize != result_size)
-		err = got_error_msg(GOT_ERR_BAD_DELTA,
-		    "delta application result size mismatch");
+		err = got_error_fmt(GOT_ERR_BAD_DELTA,
+		    "delta application result size mismatch: actual: %zd "
+		    "expected: %llu", *outsize, result_size);
 
 	if (memstream != NULL) {
 		if (fclose(memstream) == EOF && err == NULL)