[libc-commits] [libc] 7c01791 - [libc][Obvious] Fix except flags reading overflow detected by asan.

[Siva Chandra Reddy via libc-commits]

Author: Siva Chandra Reddy
Date: 2021-03-13T16:30:33-08:00
New Revision: 7c0179129fa93afa6bd893c51314820f05355b87

URL: https://github.com/llvm/llvm-project/commit/7c0179129fa93afa6bd893c51314820f05355b87
DIFF: https://github.com/llvm/llvm-project/commit/7c0179129fa93afa6bd893c51314820f05355b87.diff

LOG: [libc][Obvious] Fix except flags reading overflow detected by asan.

Added: 
    

Modified: 
    libc/src/fenv/fesetexceptflag.cpp

Removed: 
    


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diff  --git a/libc/src/fenv/fesetexceptflag.cpp b/libc/src/fenv/fesetexceptflag.cpp
index 8d44a0447f70..1968ebea5a60 100644
--- a/libc/src/fenv/fesetexceptflag.cpp
+++ b/libc/src/fenv/fesetexceptflag.cpp
@@ -20,7 +20,7 @@ LLVM_LIBC_FUNCTION(int, fesetexceptflag,
   // can fit in int type.
   static_assert(sizeof(int) >= sizeof(fexcept_t),
                 "fexcept_t value cannot fit in an int value.");
-  int excepts_to_set = *reinterpret_cast<const int *>(flagp) & excepts;
+  int excepts_to_set = static_cast<const int>(*flagp) & excepts;
   return fputil::setExcept(excepts_to_set);
 }