From abc30f79489b68f6dc0ee4b408c63a8e783215d1 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Mon, 20 Sep 2021 16:48:42 -0700
Subject: stage2: improve handling of 0 bit types

 * Sema: zirAtomicLoad handles 0-bit types correctly
 * LLVM backend: when lowering function types, elide parameters
   with 0-bit types.
 * Type: abiSize handles u0/i0 correctly
---
 src/type.zig | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/type.zig')

diff --git a/src/type.zig b/src/type.zig
index 122faefbc7..c2dc150347 100644
--- a/src/type.zig
+++ b/src/type.zig
@@ -1822,6 +1822,7 @@ pub const Type = extern union {
 
             .int_signed, .int_unsigned => {
                 const bits: u16 = self.cast(Payload.Bits).?.data;
+                if (bits == 0) return 0;
                 return std.math.ceilPowerOfTwoPromote(u16, (bits + 7) / 8);
             },
 
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