[Frontend] Define __SANITIZE__ macros for kernel address variants (#156543)
GCC defines these macros for both userspace and kernel address
sanitizers:
$ gcc -E -dM -fsanitize=address -x c /dev/null &| string match -er
SANITIZE
#define __SANITIZE_ADDRESS__ 1
$ gcc -E -dM -fsanitize=kernel-address -x c /dev/null &| string match
-er SANITIZE
#define __SANITIZE_ADDRESS__ 1
$ gcc -E -dM -fsanitize=hwaddress -x c /dev/null &| string match -er
SANITIZE
#define __SANITIZE_HWADDRESS__ 1
$ gcc -E -dM -fsanitize=kernel-hwaddress -x c /dev/null &| string match
-er SANITIZE
#define __SANITIZE_HWADDRESS__ 1
PR #153888 added these same defines for clang but only for the userspace
address sanitizers:
$ clang -E -dM -fsanitize=address -x c /dev/null &| string match -er
SANITIZE
#define __SANITIZE_ADDRESS__ 1
$ clang -E -dM -fsanitize=kernel-address -x c /dev/null &| string match
-er SANITIZE
$ clang -E -dM -fsanitize=hwaddress -x c /dev/null &| string match -er
SANITIZE
#define __SANITIZE_HWADDRESS__ 1
$ clang -E -dM -fsanitize=kernel-hwaddress -x c /dev/null &| string
match -er SANITIZE
Match GCC's behavior so that the Linux kernel can eventually drop its
own internal defines.
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