90 lines
2.6 KiB
Plaintext
90 lines
2.6 KiB
Plaintext
// issue-0018: Dot-shorthand `.{...}` for struct with protocol field causes
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// LLVM verification error when used in List(T).append from 2+ different
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// struct methods.
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//
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// Trigger: TWO or more structs each with `List(Container)` calling
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// `.append(.{ child = d })` — using dot-shorthand.
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//
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// Works: Only 1 struct doing it, or using explicit `Container.{ child = d }`.
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// Fails: 2+ structs → `Invalid InsertValueInst operands!`
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// `%si = insertvalue i64 undef, { ptr, ptr } %load, 0`
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//
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// Likely a monomorphization issue in `List(T).append` when the dot-shorthand
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// type inference is resolved from multiple call sites.
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#import "modules/std.sx";
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Drawable :: protocol {
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draw :: () -> s32;
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name :: () -> string;
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layout :: (x: s32) -> s32;
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handle :: (event: s32) -> bool;
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}
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Circle :: struct { radius: s32; }
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impl Drawable for Circle {
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draw :: (self: *Circle) -> s32 { self.radius; }
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name :: (self: *Circle) -> string { "circle"; }
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layout :: (self: *Circle, x: s32) -> s32 { x + self.radius; }
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handle :: (self: *Circle, event: s32) -> bool { event > 0; }
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}
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Square :: struct { side: s32; }
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impl Drawable for Square {
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draw :: (self: *Square) -> s32 { self.side * self.side; }
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name :: (self: *Square) -> string { "square"; }
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layout :: (self: *Square, x: s32) -> s32 { x + self.side; }
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handle :: (self: *Square, event: s32) -> bool { event > 1; }
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}
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Rect :: struct {
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x: f32;
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y: f32;
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w: f32;
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h: f32;
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zero :: () -> Rect { Rect.{ x = 0.0, y = 0.0, w = 0.0, h = 0.0 }; }
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}
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Container :: struct {
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child: Drawable;
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computed_frame: Rect = .zero();
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}
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// Two different structs, each with List(Container), both calling .append(.{...})
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// This mirrors VStack/HStack in the game.
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StackA :: struct {
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children: List(Container);
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add :: (self: *StackA, d: Drawable) {
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// BUG: `.{ child = d }` causes LLVM error when 2+ structs do this
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self.children.append(.{ child = d });
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}
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}
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StackB :: struct {
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children: List(Container);
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add :: (self: *StackB, d: Drawable) {
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// BUG: second struct doing `.{ child = d }` triggers the error
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self.children.append(.{ child = d });
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// FIX: explicit `Container.{ child = d }` works
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// self.children.append(Container.{ child = d });
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}
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}
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main :: () -> void {
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c := Circle.{ radius = 42 };
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s := Square.{ side = 5 };
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a : StackA = .{};
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a.add(c);
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print("StackA: draw={}\n", a.children.items[0].child.draw());
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b : StackB = .{};
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b.add(s);
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print("StackB: draw={}\n", b.children.items[0].child.draw());
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print("OK\n");
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}
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