Re: [PATCH 1/4] libsanitizer: merge from upstream (c425db2eb558c263)

[FX Coudert]

Heads-up: this broke bootstrap on darwin:

> +typedef void (^dispatch_mach_handler_t)(dispatch_mach_reason reason,
> +                                        dispatch_mach_msg_t message,
> +                                        mach_error_t error);


Blocks are an Apple/clang extension, not (yet) supported by GCC.

FX