From f78f9388fe79f084d5ea028e6270a410eacfc316 Mon Sep 17 00:00:00 2001
From: mlugg <mlugg@mlugg.co.uk>
Date: Sun, 12 Jan 2025 20:55:30 +0000
Subject: Sema: allow tail calls of function pointers

Resolves: #22474
---
 src/Sema.zig | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/Sema.zig b/src/Sema.zig
index 6b5aba0a23..c0c02bae58 100644
--- a/src/Sema.zig
+++ b/src/Sema.zig
@@ -7983,7 +7983,13 @@ fn analyzeCall(
         }
 
         if (call_tag == .call_always_tail) {
-            return sema.handleTailCall(block, call_src, sema.typeOf(runtime_func), result);
+            const func_or_ptr_ty = sema.typeOf(runtime_func);
+            const runtime_func_ty = switch (func_or_ptr_ty.zigTypeTag(zcu)) {
+                .@"fn" => func_or_ptr_ty,
+                .pointer => func_or_ptr_ty.childType(zcu),
+                else => unreachable,
+            };
+            return sema.handleTailCall(block, call_src, runtime_func_ty, result);
         }
 
         if (resolved_ret_ty.toIntern() == .noreturn_type) {
-- 
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