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behavior: add test for old bug

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Resolves: #18435
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mlugg 2025-02-06 01:23:27 +00:00
parent 75ec7d863e
commit 5d935e1137
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1 changed files with 17 additions and 0 deletions
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17
test/behavior/fn.zig
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@ -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);
}