On 22/09/12 21:49, Jonathan M Davis wrote:
On Saturday, September 22, 2012 21:19:27 Maxim Fomin wrote:
Privilege instruction is an assembly instruction which can be
executed only at a certain executive process context, typically
os kernel. AFAIK assert(false) was claimed to be implemented by
dmd as a halt instruction, which is privileged one.
However, compiled code shows that dmd generates int 3 instruction
for assert(false) statement and 61_6F_65_75 which is binary
representation of "aoeu" for assert(false, "aoeu") statement and
the latter is interpreted as privileged i/o instruction.
It's a normal assertion without -release. With -release, it's a halt
instruction on Linux but IIRC it's something slightly different (albeit
similar) on Windows, though it might be halt there too.
- Jonathan M Davis
I implemented the code runtime code that does it, at least on Windows.
You get much better diagnostics on Windows.
IMHO it is a Linux misfeature, they conflate a couple of unrelated
hardware exceptions together into one signal, making it hard to identify
which it was.
