zig

commit 5d935e1137ade5450e504ce9bc6bbf32301b0dfd (tree)
parent 75ec7d863efbba9dbb3eefa5e6607a5ef2fe8648
Author: mlugg <mlugg@mlugg.co.uk>
Date:   Thu,  6 Feb 2025 01:23:27 +0000

behavior: add test for old bug

Resolves: #18435

Diffstat:
M
test/behavior/fn.zig
 | 
17
+++++++++++++++++

1 file changed, 17 insertions(+), 0 deletions(-)
diff --git a/test/behavior/fn.zig b/test/behavior/fn.zig
@@ -711,3 +711,20 @@ test "inline call propagates comptime-known argument to generic parameter and re
     try expect(a1 == 12340);
     try expect(b1 == 12340);
 }
+
+test "inline function return type is evaluated at comptime" {
+    const S = struct {
+        inline fn assertComptimeAndRet(x: anytype) @TypeOf(x) {
+            if (!@inComptime()) comptime unreachable;
+            return x;
+        }
+
+        inline fn foo(val: anytype) assertComptimeAndRet(u16) {
+            return val;
+        }
+    };
+
+    const result = S.foo(123);
+    comptime assert(@TypeOf(result) == u16);
+    try expect(result == 123);
+}