[Nasm-bugs] [Bug 3392730] New: Not always flagging invalid 286 instructions
noreply-nasm at dev.nasm.us
noreply-nasm at dev.nasm.us
Tue Dec 22 09:01:14 PST 2020
https://bugzilla.nasm.us/show_bug.cgi?id=3392730
Bug ID: 3392730
Summary: Not always flagging invalid 286 instructions
Product: NASM
Version: unspecified
Hardware: All
OS: All
Status: OPEN
Severity: normal
Priority: Medium
Component: Assembler
Assignee: nobody at nasm.us
Reporter: bretjohn at juno.com
CC: chang.seok.bae at intel.com, gorcunov at gmail.com,
hpa at zytor.com, nasm-bugs at nasm.us
Obtained from: Binary from nasm.us
I'm currently using NASM v2.10 for DOS. I have not updated and tested yet with
the latest version (2.15), but suspect the problem still exists. I have the
following instructions in one of my source code files:
CPU 286
...
MOV FS,[CS:FSValue]
which should have been flagged as an error when compiling, but it wasn't (any
instruction which references FS or GS on a 286 CPU is invalid). I suspect this
probably occurs with the CPU 186 and CPU 8086 directive also, but don't know
for sure.
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