MSan should unpoison the parameters of extended signal handlers. However, MSan unpoisoned the second parameter with the wrong size `sizeof(__sanitizer_sigaction)`, inconsistent with its real type `siginfo_t`. This commit fixes this issue by correcting the size to `sizeof(__sanitizer_siginfo)`.
Compiler-RT ================================ This directory and its subdirectories contain source code for the compiler support routines. Compiler-RT is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt. ================================