refs: print error message in debug output

hanwen · gitster · commit a6db572af6bc · 2021-12-22T13:51:37.000-08:00
Signed-off-by: Han-Wen Nienhuys &lt;hanwen@google.com&gt;
Signed-off-by: Junio C Hamano &lt;gitster@pobox.com&gt;
diff --git a/refs/debug.c b/refs/debug.c
@@ -47,7 +47,8 @@ static int debug_transaction_prepare(struct ref_store *refs,
 	transaction->ref_store = drefs->refs;
 	res = drefs->refs->be->transaction_prepare(drefs->refs, transaction,
 						   err);
-	trace_printf_key(&trace_refs, "transaction_prepare: %d\n", res);
+	trace_printf_key(&trace_refs, "transaction_prepare: %d \"%s\"\n", res,
+			 err->buf);
 	return res;
 }
 

Original file line number	Diff line number	Diff line change
`@@ -47,7 +47,8 @@ static int debug_transaction_prepare(struct ref_store *refs,`
`47`	`47`	`transaction->ref_store = drefs->refs;`
`48`	`48`	`res = drefs->refs->be->transaction_prepare(drefs->refs, transaction,`
`49`	`49`	`err);`
`50`		`- trace_printf_key(&trace_refs, "transaction_prepare: %d\n", res);`
	`50`	`+ trace_printf_key(&trace_refs, "transaction_prepare: %d \"%s\"\n", res,`
	`51`	`+ err->buf);`
`51`	`52`	`return res;`
`52`	`53`	`}`
`53`	`54`