From 6e0e76479a89b289e5ffd477114c7c933754f518 Mon Sep 17 00:00:00 2001
From: "Andrew J. Hesford" <ajh@sideband.org>
Date: Thu, 30 Mar 2023 12:08:31 -0400
Subject: [PATCH] d2: fix build for 32-bit architectures

---
 srcpkgs/d2/patches/magic-32bit.patch | 35 ++++++++++++++++++++++++++++
 srcpkgs/d2/template                  |  2 +-
 2 files changed, 36 insertions(+), 1 deletion(-)
 create mode 100644 srcpkgs/d2/patches/magic-32bit.patch

diff --git a/srcpkgs/d2/patches/magic-32bit.patch b/srcpkgs/d2/patches/magic-32bit.patch
new file mode 100644
index 00000000000..15b12ba52ae
--- /dev/null
+++ b/srcpkgs/d2/patches/magic-32bit.patch
@@ -0,0 +1,35 @@
+The value of MAGIC_CHECKSUM_ADJUSTMENT overflows a signed integer on 32-bit
+architectures and is always used as an unsigned value anyway, so just define it
+as unsigned from the beginning.
+
+--- a/lib/font/font.go
++++ b/lib/font/font.go
+@@ -49,8 +49,8 @@
+ 	WOFF_ENTRY_OFFSET_CHECKSUM     = 16
+ 
+ 	// magic
+-	MAGIC_WOFF                = 0x774f4646
+-	MAGIC_CHECKSUM_ADJUSTMENT = 0xb1b0afba
++	MAGIC_WOFF uint32                = 0x774f4646
++	MAGIC_CHECKSUM_ADJUSTMENT uint32 = 0xb1b0afba
+ 
+ 	// sizes
+ 	SIZE_OF_WOFF_HEADER      = 44
+@@ -85,7 +85,7 @@
+ 	numTables := binary.BigEndian.Uint16(fontBuf[4:])
+ 
+ 	woffHeader := make([]byte, SIZE_OF_WOFF_HEADER)
+-	binary.BigEndian.PutUint32(woffHeader[WOFF_OFFSET_MAGIC:], uint32(MAGIC_WOFF))
++	binary.BigEndian.PutUint32(woffHeader[WOFF_OFFSET_MAGIC:], MAGIC_WOFF)
+ 	binary.BigEndian.PutUint16(woffHeader[WOFF_OFFSET_NUM_TABLES:], numTables)
+ 	binary.BigEndian.PutUint16(woffHeader[WOFF_OFFSET_SFNT_SIZE:], 0)
+ 	binary.BigEndian.PutUint32(woffHeader[WOFF_OFFSET_META_OFFSET:], 0)
+@@ -148,7 +148,7 @@
+ 		csum += tableEntry.CheckSum
+ 	}
+ 
+-	var checksumAdjustment = uint32(MAGIC_CHECKSUM_ADJUSTMENT) - csum
++	var checksumAdjustment = MAGIC_CHECKSUM_ADJUSTMENT - csum
+ 
+ 	majorVersion := uint16(0)
+ 	minVersion := uint16(1)
diff --git a/srcpkgs/d2/template b/srcpkgs/d2/template
index 6390259363d..20d46351b0b 100644
--- a/srcpkgs/d2/template
+++ b/srcpkgs/d2/template
@@ -1,7 +1,7 @@
 # Template file for 'd2'
 pkgname=d2
 version=0.3.0
-revision=1
+revision=2
 build_style=go
 go_import_path="oss.terrastruct.com/d2"
 short_desc="Modern diagram scripting language that turns text to diagrams"