https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67552
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-09-14
Ever confirmed|0 |1
--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Yulia Koval from comment #5)
> Sorry, I don't understand why we shouldn't preserve the red zone. The
> function "foo", executing before the interrupt was called, used its red
> zone. If the interrupt does not adjust the stack pointer, who control that
> "foo" function's red zone would not be overwritten?
Please take a look at Exception- or Interrupt-Handler Procedures in
Intel64 and IA-32 Architectures Software Developer’s Manual vol 3.
There is no red zone on stack of interrupt handler, which is controlled
by processor, independent of any calling conventions.
