From 633162eb0c8d302ba7585cd308e01237409f042e Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Sat, 20 Sep 2025 18:58:16 -0700
Subject: [PATCH] add behavior test: comptime C pointer to optional pointer

---
 test/behavior/pointers.zig | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/test/behavior/pointers.zig b/test/behavior/pointers.zig
index b7239be38f..a0564fcaa0 100644
--- a/test/behavior/pointers.zig
+++ b/test/behavior/pointers.zig
@@ -778,3 +778,11 @@ test "pointers to elements of many-ptr to zero-bit type" {
 
     try expect(a == b);
 }
+
+test "comptime C pointer to optional pointer" {
+    const opt: ?*u8 = @ptrFromInt(0x1000);
+    const outer_ptr: [*c]const ?*u8 = &opt;
+    const inner_ptr = &outer_ptr.*.?;
+    comptime assert(@TypeOf(inner_ptr) == [*c]const *u8);
+    comptime assert(@intFromPtr(inner_ptr.*) == 0x1000);
+}