From 99d6a077fedf67632e0c44b44df7e1ac98228868 Mon Sep 17 00:00:00 2001
From: Jeroen van Rijn <Kelimion@users.noreply.github.com>
Date: Fri, 18 Aug 2023 22:16:59 +0200
Subject: [PATCH] _buffer_grow: Preserve allocator if already set via
 init_buffer_allocator

Fixes #2756
---
 core/bytes/buffer.odin | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/core/bytes/buffer.odin b/core/bytes/buffer.odin
index 4375d8195..abfee6f2f 100644
--- a/core/bytes/buffer.odin
+++ b/core/bytes/buffer.odin
@@ -113,8 +113,11 @@ _buffer_grow :: proc(b: ^Buffer, n: int) -> int {
 	if i, ok := _buffer_try_grow(b, n); ok {
 		return i
 	}
+
 	if b.buf == nil && n <= SMALL_BUFFER_SIZE {
-		b.buf = make([dynamic]byte, n, SMALL_BUFFER_SIZE)
+		// Fixes #2756 by preserving allocator if already set on Buffer via init_buffer_allocator
+		reserve(&b.buf, SMALL_BUFFER_SIZE)
+		resize(&b.buf, n)
 		return 0
 	}