From 52d8099daeb34edc00898ef8cc34bd6f136949aa Mon Sep 17 00:00:00 2001
From: Jacob Young <jacobly0@users.noreply.github.com>
Date: Wed, 8 Nov 2023 14:42:45 -0500
Subject: [PATCH] Sema: don't allow passing non-extern types to varargs
 parameters

---
 src/Sema.zig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/Sema.zig b/src/Sema.zig
index 241f65a9a0..0911f75feb 100644
--- a/src/Sema.zig
+++ b/src/Sema.zig
@@ -29436,6 +29436,7 @@ fn coerceVarArgParam(
             }
         },
         else => if (uncasted_ty.isAbiInt(mod)) int: {
+            if (!try sema.validateExternType(uncasted_ty, .param_ty)) break :int inst;
             const target = sema.mod.getTarget();
             const uncasted_info = uncasted_ty.intInfo(mod);
             if (uncasted_info.bits <= target.c_type_bit_size(switch (uncasted_info.signedness) {