From 57a82a26e7483763b978f1e623eecfbcdb4e8da9 Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Sat, 17 Sep 2022 09:19:00 -0700
Subject: [PATCH] pkg/fontconfig: const pointers

---
 pkg/fontconfig/char_set.zig | 11 +++++++++--
 pkg/fontconfig/lang_set.zig | 11 +++++++++--
 2 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/pkg/fontconfig/char_set.zig b/pkg/fontconfig/char_set.zig
index 3101f7258..4b3e3da01 100644
--- a/pkg/fontconfig/char_set.zig
+++ b/pkg/fontconfig/char_set.zig
@@ -11,8 +11,8 @@ pub const CharSet = opaque {
         c.FcCharSetDestroy(self.cval());
     }
 
-    pub fn hasChar(self: *CharSet, cp: u32) bool {
-        return c.FcCharSetHasChar(self.cval(), cp) == c.FcTrue;
+    pub fn hasChar(self: *const CharSet, cp: u32) bool {
+        return c.FcCharSetHasChar(self.cvalConst(), cp) == c.FcTrue;
     }
 
     pub inline fn cval(self: *CharSet) *c.struct__FcCharSet {
@@ -21,6 +21,13 @@ pub const CharSet = opaque {
             self,
         );
     }
+
+    pub inline fn cvalConst(self: *const CharSet) *const c.struct__FcCharSet {
+        return @ptrCast(
+            *const c.struct__FcCharSet,
+            self,
+        );
+    }
 };
 
 test "create" {
diff --git a/pkg/fontconfig/lang_set.zig b/pkg/fontconfig/lang_set.zig
index 7f71f394a..779ff1719 100644
--- a/pkg/fontconfig/lang_set.zig
+++ b/pkg/fontconfig/lang_set.zig
@@ -11,8 +11,8 @@ pub const LangSet = opaque {
         c.FcLangSetDestroy(self.cval());
     }
 
-    pub fn hasLang(self: *LangSet, lang: [:0]const u8) bool {
-        return c.FcLangSetHasLang(self.cval(), lang.ptr) == c.FcTrue;
+    pub fn hasLang(self: *const LangSet, lang: [:0]const u8) bool {
+        return c.FcLangSetHasLang(self.cvalConst(), lang.ptr) == c.FcTrue;
     }
 
     pub inline fn cval(self: *LangSet) *c.struct__FcLangSet {
@@ -21,6 +21,13 @@ pub const LangSet = opaque {
             self,
         );
     }
+
+    pub inline fn cvalConst(self: *const LangSet) *const c.struct__FcLangSet {
+        return @ptrCast(
+            *const c.struct__FcLangSet,
+            self,
+        );
+    }
 };
 
 test "create" {