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71d16106ad
* The langspec definition of `@memcpy` has been changed so that the source and destination element types must be in-memory coercible, allowing all such calls to be raw copying operations, not actually applying any coercions. * Implement aliasing check for comptime `@memcpy`; a compile error will now be emitted if the arguments alias. * Implement more efficient comptime `@memcpy` by loading and storing a whole array at once, similar to how `@memset` is implemented.
15 lines
290 B
Zig
15 lines
290 B
Zig
var arr: [10]u64 = undefined;
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export fn foo() void {
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@memcpy(arr[0..6], arr[4..10]);
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}
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comptime {
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var types: [4]type = .{ u8, u16, u32, u64 };
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@memcpy(types[2..4], types[1..3]);
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}
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// error
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//
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// :3:5: error: '@memcpy' arguments alias
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// :8:5: error: '@memcpy' arguments alias
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