mirror of
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synced 2025-12-28 17:13:19 +00:00
37e2a04da8
This adds a standalone test case to ensure the runtime does not trap when performing a memory.copy or memory.fill instruction while the destination or source address is out-of-bounds and the length is 0.
24 lines
529 B
Zig
24 lines
529 B
Zig
const std = @import("std");
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test {
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var dest = foo();
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var source = foo();
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@memcpy(dest, source);
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@memset(dest, 4);
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@memset(dest, undefined);
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var dest2 = foo2();
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@memset(dest2, 0);
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}
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fn foo() []u8 {
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const ptr = comptime std.mem.alignBackward(usize, std.math.maxInt(usize), 1);
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return @as([*]align(1) u8, @ptrFromInt(ptr))[0..0];
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}
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fn foo2() []u64 {
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const ptr = comptime std.mem.alignBackward(usize, std.math.maxInt(usize), 1);
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return @as([*]align(1) u64, @ptrFromInt(ptr))[0..0];
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}
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