[Bug fortran/55341] address-sanitizer and Fortran

[Joost.VandeVondele at mat dot ethz.ch]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55341

--- Comment #19 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> 2012-12-19 08:48:47 UTC ---
(In reply to comment #17)
> For whatever reason the fortran code is touching asan's shadow:
>   Address 0x1ffff6742e2c is located in the high shadow area.
> 
> What is __qs_environment_MOD_qs_init doing? 
> Is it normally touching that region of address space?

Well, certainly the code is not trying to do anything fancy (i.e. writing to
specific addresses or so), it is plain Fortran code. 

qs_init is doing the initialization of our simulation code, it is mostly a
bunch of calls to other subroutines doing init as well (which makes difficult
to extract as a small testcase).

Is the shadow area checked regularly ? If not, I could try to trigger the
checking more often to try and narrow the issue.