Calling target_compile_features with a cxx feature on a C project cause segfault

Not a big deal, but not how I'd expect Cmake to handle this scenario.

cmake version 3.8.1, OSX 10.12.5

CMakeLists.txt:

cmake_minimum_required(VERSION 3.8.1)
project(Example LANGUAGES C)

add_library(Example dummy.c)
target_compile_features(Example PRIVATE cxx_enum_forward_declarations)

Result: Segmentation fault: 11

Edited Jun 23, 2017 by Alex Tennant

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