df0f0e3c44
It appears there are two trailing null bytes at the end of the string. This does not seem right. But it might be a good idea generally to remove any null bytes that get into error messages.
48 lines
1.3 KiB
C#
48 lines
1.3 KiB
C#
using System;
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using System.Runtime.Serialization;
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using System.Text;
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namespace Wasmtime
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{
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/// <summary>
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/// The exception for WebAssembly traps.
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/// </summary>
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[Serializable]
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public class TrapException : WasmtimeException
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{
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/// <inheritdoc/>
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public TrapException() { }
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/// <inheritdoc/>
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public TrapException(string message) : base(message) { }
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/// <inheritdoc/>
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public TrapException(string message, Exception inner) : base(message, inner) { }
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/// <inheritdoc/>
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protected TrapException(SerializationInfo info, StreamingContext context) : base(info, context) { }
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internal static TrapException FromOwnedTrap(IntPtr trap)
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{
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unsafe
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{
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Interop.wasm_trap_message(trap, out var bytes);
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var byteSpan = new ReadOnlySpan<byte>(bytes.data, checked((int)bytes.size));
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int indexOfNull = byteSpan.IndexOf((byte)0);
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if (indexOfNull != -1)
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byteSpan = byteSpan.Slice(0, indexOfNull);
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var message = Encoding.UTF8.GetString(byteSpan);
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Interop.wasm_byte_vec_delete(ref bytes);
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Interop.wasm_trap_delete(trap);
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return new TrapException(message);
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}
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}
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// TODO: expose trap frames
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}
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}
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