[Bug sanitizer/55617] static constructors are not being instrumented correctly on darwin

[howarth at nitro dot med.uc.edu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55617

--- Comment #14 from Jack Howarth <howarth at nitro dot med.uc.edu> 2013-01-30 15:57:11 UTC ---
(In reply to comment #13)

See in gcc/config/darwin.h...

/* The Apple assembler and linker do not support constructor priorities.  */
#undef SUPPORTS_INIT_PRIORITY
#define SUPPORTS_INIT_PRIORITY 0

and http://trac.macports.org/ticket/37664 discusses this limitation as well.
Can't we just latch onto the SUPPORTS_INIT_PRIORITY being defined to 0  on
darwin to force __asan_init to be emiited (perhaps in the constructor)? If a
single call to __asan_init would suffice shouldn't that work because the
constructor should be called before the destructor in real code?