From 2374664e95f5f45ceccb132848184b9ec2bff77d Mon Sep 17 00:00:00 2001
From: Jack May <jack@solana.com>
Date: Wed, 11 Nov 2020 16:37:18 -0800
Subject: [PATCH] Custom heap is BPF only (#13537)

---
 sdk/program/src/entrypoint.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sdk/program/src/entrypoint.rs b/sdk/program/src/entrypoint.rs
index 5d979db348..588cb65b0e 100644
--- a/sdk/program/src/entrypoint.rs
+++ b/sdk/program/src/entrypoint.rs
@@ -45,7 +45,10 @@ pub const HEAP_LENGTH: usize = 32 * 1024;
 #[macro_export]
 macro_rules! entrypoint {
     ($process_instruction:ident) => {
-        #[cfg(all(not(feature = "custom-heap"), not(test)))]
+        /// A program can provide their own custom heap implementation by adding
+        /// a `custom-heap` feature to `Cargo.toml` and implementing their own
+        /// `global_allocator`.
+        #[cfg(all(not(feature = "custom-heap"), target_arch = "bpf"))]
         #[global_allocator]
         static A: $crate::entrypoint::BumpAllocator = $crate::entrypoint::BumpAllocator {
             start: $crate::entrypoint::HEAP_START_ADDRESS,