a90d053b84
KASAN and KCSAN implement interceptors for various primitive operations that are not instrumented by the compiler. KMSAN requires them as well. Rather than adding new cases for each sanitizer which requires interceptors, implement the following protocol: - When interceptor definitions are required, define SAN_NEEDS_INTERCEPTORS and SANITIZER_INTERCEPTOR_PREFIX. - In headers that declare functions which need to be intercepted by a sanitizer runtime, use SANITIZER_INTERCEPTOR_PREFIX to provide declarations. - When SAN_RUNTIME is defined, do not redefine the names of intercepted functions. This is typically the case in files which implement sanitizer runtimes but is also needed in, for example, files which define ifunc selectors for intercepted operations. MFC after: 2 weeks Sponsored by: The FreeBSD Foundation |
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