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			25 lines
		
	
	
		
			810 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			25 lines
		
	
	
		
			810 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
| // Copyright 2018 the V8 project authors. All rights reserved.
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| // Use of this source code is governed by a BSD-style license that can be
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| // found in the LICENSE file.
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| 
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| // Flags: --expose-wasm --experimental-wasm-eh
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| 
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| load("test/mjsunit/wasm/wasm-module-builder.js");
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| 
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| // Prepare a special error object to throw.
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| var error = new Error("my error");
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| error.__proto__ = new Proxy(new Error(), {
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|   has(target, property, receiver) {
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|     assertUnreachable();
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|   }
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| });
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| 
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| // Throw it through a WebAssembly module.
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| var builder = new WasmModuleBuilder();
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| builder.addImport('mod', 'fun', kSig_v_v);
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| builder.addFunction("funnel", kSig_v_v)
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|        .addBody([kExprCallFunction, 0])
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|        .exportFunc();
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| var instance = builder.instantiate({ mod: {fun: function() { throw error }}});
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| assertThrows(instance.exports.funnel, Error);
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