From 1aba1fe8b1fd8efaa9f500f191bb4f4180020c93 Mon Sep 17 00:00:00 2001
From: Norman Feske <norman.feske@genode-labs.com>
Date: Tue, 21 Aug 2018 14:08:53 +0200
Subject: [PATCH] heap: diagnostic message on alloc(0)

---
 repos/base/src/lib/base/heap.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/repos/base/src/lib/base/heap.cc b/repos/base/src/lib/base/heap.cc
index 6dd3bd3d1f..1065c1d957 100644
--- a/repos/base/src/lib/base/heap.cc
+++ b/repos/base/src/lib/base/heap.cc
@@ -215,6 +215,9 @@ bool Heap::_unsynchronized_alloc(size_t size, void **out_addr)
 
 bool Heap::alloc(size_t size, void **out_addr)
 {
+	if (size == 0)
+		error("attempt to allocated zero-size block from heap");
+
 	/* serialize access of heap functions */
 	Lock::Guard lock_guard(_lock);