blob: 7134389a50646ec4669fce0a2e063719f16789e2 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
tcg bug master / 4.0.0 v8 operation >>> and |=
vm guest is linux, executed with tcg
running this Node.js snippet leads to
$ node
> a = undefined
undefined
> a >>> 0
4294967295
host node
$ node
> a = undefined
undefined
> a >>> 0
0
same with |=
node
Welcome to Node.js v12.4.0.
Type ".help" for more information.
> let buffer
undefined
> buffer |= 0
0
vm with tcg:
$ ./out/Release/node --version
v12.4.0
./out/Release/node -e "let buffer; buffer |= 0; console.log(buffer);"
-1
vm guest is debian x86_64 latest release
vm guest is started with ./x86_64-softmmu/qemu-system-x86_64 -vnc :0 -cdrom debian-9.9.0-amd64-netinst.iso -m 4G -smp cores=6,threads=1,sockets=1 -nic user,hostfwd=tcp:ipv4addr:2233-:22 -cpu qemu64 debian.img
git tag v4.0.0 and master, commit a578cdfbdd8f9beff5ced52b7826ddb1669abbbf, for building qemu-system-x86_64 was used.
Node.js as compiled on the vm guest (v12.4.0 / master)
see also
https://github.com/nodejs/node/issues/19348#issuecomment-500465502
I need further assistance to track down the cause of the bug.
Kind regards
Manuel
|