v8/test/mjsunit/regress/wasm/regress-1179182.js
Clemens Backes 6b86436154 [liftoff] Fix bug in instance caching
In {MergeFullStackWith}, we were accidentally looking at the cached
instance in the current {cache_state_} instead of the state passed as
{source}. This could lead to missing reload of the instance after a
conditional branch.

R=thibaudm@chromium.org

Bug: chromium:1179182
Change-Id: Ida3c06491f7973a183c43745159abbf6aa8a058b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2704081
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72864}
2021-02-19 13:13:05 +00:00

29 lines
972 B
JavaScript

// Copyright 2021 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --wasm-staging
load('test/mjsunit/wasm/wasm-module-builder.js');
const builder = new WasmModuleBuilder();
builder.addMemory(28, 32, false);
builder.addFunction(undefined, kSig_i_v)
.addLocals(kWasmI32, 61)
.addBody([
kExprI64Const, 0x0, // i64.const
kExprI32Const, 0x0, // i32.const
kExprIf, kWasmStmt, // if
kExprI32Const, 0x0, // i32.const
kExprI32LoadMem, 0x01, 0x23, // i32.load
kExprBrTable, 0x01, 0x00, 0x00, // br_table
kExprEnd, // end
kExprI64SExtendI16, // i64.extend16_s
kExprI32Const, 0x00, // i32.const
kExprLocalGet, 0x00, // local.get
kExprI32StoreMem16, 0x00, 0x10, // i32.store16
kExprUnreachable, // unreachable
]).exportAs('main');
const instance = builder.instantiate();
assertThrows(instance.exports.main, WebAssembly.RuntimeError, 'unreachable');