d4edf4b4b0
A *self method called directly on arr[i] (or a deref place) fell through to an alloca+store-of-value, so the callee mutated a throwaway copy and the live slot was never written. fixupMethodReceiver now takes the real address of .index_expr/.deref_expr receivers via lowerExprAsPtr (normalized to *T), mirroring the explicit-argument path. A comptime-pack index (xs[i] where xs is a pack) is excluded -- a pack has no runtime storage to address -- so it keeps flowing through the general copy path. Regression: examples/0188-types-method-array-index-receiver.sx
27 lines
888 B
Plaintext
27 lines
888 B
Plaintext
// A `*self` method called directly on an array-index place (`arr[i].method()`)
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// must mutate the LIVE array slot, not a throwaway copy. `fixupMethodReceiver`
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// now takes the real address of `.index_expr`/`.deref_expr` receivers (via
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// `lowerExprAsPtr`), mirroring the explicit-argument path — instead of falling
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// through to an alloca+store-of-value that the callee then mutates in vain.
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//
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// Regression (issue 0145).
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#import "modules/std.sx";
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S :: struct {
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flag: bool;
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set :: (self: *S) { self.flag = true; }
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}
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A :: struct { items: [4]S; }
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main :: () -> i32 {
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a : A = .{};
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a.items[1].set(); // direct: must mutate the slot
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print("direct = {}\n", a.items[1].flag); // true
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p := @a.items[1];
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p.set(); // via explicit pointer
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print("ptr = {}\n", a.items[1].flag); // true
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0
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}
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