8434e5d0a1
This ports msan https://reviews.llvm.org/D14795 to dfsan. dfsan, like msan, clears shadow for globals in a newly opened DSO in case the DSO occupies the address of a previously labeled/poisoned area. The operation should not happen on the main executable. In addition, for a DT_EXEC executable, l_addr is zero and will lead to a null pointer dereference in ForEachMappedRegion.
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. ================================