From 57872856e8c5b5de1381c601e6580877b0f37f44 Mon Sep 17 00:00:00 2001
From: Elias Naur <mail@eliasnaur.com>
Date: Tue, 26 Jan 2021 14:48:27 +0100
Subject: [PATCH] internal/unsafe: fix SliceOf to return len equals to cap

Broken by gioui.org/commit/2dce8a0155ae192f54f74747d660b9f311e9e364,
found while debugging the dormant OpenGL backend for Windows.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
---
 internal/unsafe/unsafe.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/internal/unsafe/unsafe.go b/internal/unsafe/unsafe.go
index 3e963777..4687ca61 100644
--- a/internal/unsafe/unsafe.go
+++ b/internal/unsafe/unsafe.go
@@ -41,6 +41,7 @@ func SliceOf(s uintptr) []byte {
 	h := (*reflect.SliceHeader)(unsafe.Pointer(&res))
 	h.Data = s
 	h.Cap = 1 << 30
+	h.Len = 1 << 30
 	return res
 }