> >> If you want to bake in some options at compile time, there are a few
> ways
> >> to do it. -DASAN_DEFAULT_OPTIONS=check_initialization_order=true will
> work,
> >> or you can define the __asan_default_options function somewhere in the
> >> binary like this:
> >>
> >
> > Thanks, we are not compiling the compiler.
>
> You don't need to - just define this function somewhere in your exe
> and libasan will automatically find it and take it's return value as
> default option string. To control the string from cmdline you'll just
> need to return a cmdline-controlled macro from it.
>
Ah, OK, thanks.
So I'm clear, I need to add the following:
#ifdef MYLIB_ASAN_CHECK_CXX_ORDER
bool check_initialization_order
{
reutn true;
}
#endif
And then the following when building for the sanitizer:
export CXX=clang++
export CXXF:AGS+"-g3 -O2 -DMYLIB_ASAN_CHECK_CXX_ORDER"
make
Is that correct?
My last question is, how can I detect when initializer order checking is
available? We currently use the following in our test script to detect when
Address Sanitzer is available:
$CXX -x c++ -fsanitize=address adhoc.cpp.proto -c -o $TMP/adhoc >
/dev/null 2>&1
if [ "$?" -eq "0" ] && [ "$IS_X86" -ne "0" ]; then
HAVE_ASAN=1
else
HAVE_ASAN=0
fi
But its not clear to me how to determine when this particular feature is
available.
Thanks again for the help.
Jeff
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