[compiler-rt] r200686 - [sanitizer] Resubmit r200683: disable -ffunction-sections.

[Justin Bogner]

Evgeniy Stepanov <eugeni.stepanov at gmail.com> writes:
> [sanitizer] Resubmit r200683: disable -ffunction-sections.
>
> Added:
>     compiler-rt/trunk/lib/asan/lit_tests/TestCases/Linux/function-sections-are-bad.cc
> (with props)
> Modified:
>     compiler-rt/trunk/CMakeLists.txt
>
> Modified: compiler-rt/trunk/CMakeLists.txt
> URL:
> http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/CMakeLists.txt?rev=200686&r1=200685&r2=200686&view=diff==============================================================================
> --- compiler-rt/trunk/CMakeLists.txt (original)
> +++ compiler-rt/trunk/CMakeLists.txt Mon Feb  3 05:16:41 2014
> @@ -142,6 +142,7 @@ if (NOT MSVC)
>      -fno-stack-protector
>      -Wno-gnu  # Variadic macros with 0 arguments for ...
>      -fvisibility=hidden
> +    -fno-function-sections
>      )
>    if (NOT COMPILER_RT_DEBUG)
>      list(APPEND SANITIZER_COMMON_CFLAGS -O3)

This breaks the build with -WERROR when building with clang (unless it's
ToT), and spews warnings without -WERROR.