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Sema: fix coercion from [:0]T to [*c]T

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This commit is contained in:
Veikka Tuominen 2022-12-19 20:44:58 +02:00
parent 0c1d8659c5
commit 6511afcfe0
2 changed files with 13 additions and 2 deletions
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5
src/Sema.zig
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@ -24615,8 +24615,9 @@ fn coerceExtra(
else => break :p,
}
if (inst_info.size == .Slice) {
if (dest_info.sentinel == null or inst_info.sentinel == null or
!dest_info.sentinel.?.eql(inst_info.sentinel.?, dest_info.pointee_type, sema.mod))
assert(dest_info.sentinel == null);
if (inst_info.sentinel == null or
!inst_info.sentinel.?.eql(Value.zero, dest_info.pointee_type, sema.mod))
break :p;
const slice_ptr = try sema.analyzeSlicePtr(block, inst_src, inst, inst_ty);

10
test/behavior/cast.zig
View File

@ -1495,3 +1495,13 @@ test "cast typed undefined to int" {
_ = b;
}
}
test "implicit cast from [:0]T to [*c]T" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
var a: [:0]const u8 = "foo";
var b: [*c]const u8 = a;
var c = std.mem.span(b);
try expect(c.len == a.len);
try expect(c.ptr == a.ptr);
}