From a06388869dab03abda4eab5e4d5f52b4cbfd36ae Mon Sep 17 00:00:00 2001
From: Qwerasd <qwerasd205@users.noreply.github.com>
Date: Mon, 16 Dec 2024 15:20:26 -0500
Subject: [PATCH] fix: sCapHeight and sxHeight only exist when OS/2 version >=
 2

---
 src/font/face/freetype.zig | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/font/face/freetype.zig b/src/font/face/freetype.zig
index 409b9547f..186ad9e10 100644
--- a/src/font/face/freetype.zig
+++ b/src/font/face/freetype.zig
@@ -775,10 +775,13 @@ pub const Face = struct {
         // available, otherwise we try to measure the `H` and `x` glyphs.
         const cap_height: ?f64, const ex_height: ?f64 = heights: {
             if (maybe_os2) |os2| {
-                break :heights .{
-                    @as(f64, @floatFromInt(os2.sCapHeight)) * px_per_unit,
-                    @as(f64, @floatFromInt(os2.sxHeight)) * px_per_unit,
-                };
+                // The OS/2 table does not include these metrics in version 1.
+                if (os2.version >= 2) {
+                    break :heights .{
+                        @as(f64, @floatFromInt(os2.sCapHeight)) * px_per_unit,
+                        @as(f64, @floatFromInt(os2.sxHeight)) * px_per_unit,
+                    };
+                }
             }
             break :heights .{
                 cap: {