tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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bug1684861.js (1697B)

      1 const oob = /index out of bounds/;
      2 const unaligned = /unaligned memory access/;
      3 const RuntimeError = WebAssembly.RuntimeError;
      4 
      5 // Test memory.atomic.notify unaligned access.
      6 const module = new WebAssembly.Module(wasmTextToBinary(`(module
      7  (type (;0;) (func))
      8  (func $main (type 0)
      9    i32.const -64
     10    i32.const -63
     11    memory.atomic.notify offset=1
     12    unreachable)
     13  (memory (;0;) 4 4)
     14  (export "main" (func $main)))`));
     15 
     16 const instance = new WebAssembly.Instance(module);
     17 assertErrorMessage(() => instance.exports.main(), RuntimeError, unaligned);
     18 
     19 // Test memory.atomic.notify oob access.
     20 const module2 = new WebAssembly.Module(wasmTextToBinary(`(module
     21  (type (;0;) (func))
     22  (func $main (type 0)
     23    i32.const -64
     24    i32.const -63
     25    memory.atomic.notify offset=65536
     26    unreachable)
     27  (memory (;0;) 4 4)
     28  (export "main" (func $main)))`));
     29 
     30 const instance2 = new WebAssembly.Instance(module2);
     31 assertErrorMessage(() => instance2.exports.main(), RuntimeError, oob);
     32 
     33 // Test memory.atomic.wait32 and .wait64 unaligned access.
     34 const module3 = new WebAssembly.Module(wasmTextToBinary(`(module
     35  (type (;0;) (func))
     36  (func $wait32 (type 0)
     37    i32.const -64
     38    i32.const 42
     39    i64.const 0
     40    memory.atomic.wait32 offset=1
     41    unreachable)
     42  (func $wait64 (type 0)
     43    i32.const -64
     44    i64.const 43
     45    i64.const 0
     46    memory.atomic.wait64 offset=3
     47    unreachable)
     48  (memory (;0;) 4 4 shared)
     49  (export "wait32" (func $wait32))
     50  (export "wait64" (func $wait64)))`));
     51 
     52 const instance3 = new WebAssembly.Instance(module3);
     53 assertErrorMessage(() => instance3.exports.wait32(), RuntimeError, unaligned);
     54 assertErrorMessage(() => instance3.exports.wait64(), RuntimeError, unaligned);