From c90187046a01c5144d80c2c9d52d7c8e36f24b5b Mon Sep 17 00:00:00 2001
From: Pietro Gagliardi <pietro10@mac.com>
Date: Sun, 26 Aug 2018 14:26:33 -0400
Subject: [PATCH] Zero-fill pkguiAlloc()'s output.

---
 pkgui.h | 1 +
 util.go | 6 ++++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/pkgui.h b/pkgui.h
index d511041..d7cd5b2 100644
--- a/pkgui.h
+++ b/pkgui.h
@@ -3,6 +3,7 @@
 #define pkguiHFileIncluded
 
 #include <stdlib.h>
+#include <string.h>
 #include <time.h>
 #include "ui.h"
 
diff --git a/util.go b/util.go
index e7fb937..9c3fd63 100644
--- a/util.go
+++ b/util.go
@@ -12,8 +12,10 @@ import "C"
 //export pkguiAlloc
 func pkguiAlloc(n C.size_t) unsafe.Pointer {
 	// cgo turns C.malloc() into a panic-on-OOM version; use it
-	// TODO make sure it zero-initializes too
-	return C.malloc(n)
+	ret := C.malloc(n)
+	// and this won't zero-initialize; do it ourselves
+	C.memset(ret, 0, n)
+	return ret
 }
 
 func freestr(str *C.char) {