From: Matthias Kruk <m@m10k.eu>
Date: Sun, 2 May 2021 11:39:05 +0000 (+0900)
Subject: array: Make array_get() return an error if an element wasn't set
X-Git-Url: https://git.corax.cc/?a=commitdiff_plain;h=8663f98b156ab3a9c146c418ed93e157da3e39a1;p=mwm

array: Make array_get() return an error if an element wasn't set

The array_get() function returns success when an entry is retrieved that
was never set. This makes it hard to distinguish uninitialized entries.
This commit changes array_get() to return an error if the caller is
attempting to retrieve an uninitialized entry.
---

diff --git a/array.c b/array.c
index 3a143de..325e68b 100644
--- a/array.c
+++ b/array.c
@@ -208,8 +208,12 @@ int array_get(struct array *array, int idx, void **data)
 	}
 
 	real_idx = idx % array->size;
-	*data = array->data[real_idx];
 
+	if(!array->flags[real_idx]) {
+		return(-ENOENT);
+	}
+
+	*data = array->data[real_idx];
 	return(0);
 }