This also makes compiling LDC with clang rather difficult
[ 1%] Building CXX object CMakeFiles/LDCShared.dir/dmd2/func.c.o
/root/llvm/src/ldc/dmd2/func.c:540:18: error: case value
evaluates to -2, which cannot be narrowed to type 'size_t' (aka
'unsigned long') [-Wc++11-narrowing]
case -2: // can't determine because of fwd refs
^
/root/llvm/src/ldc/dmd2/func.c:503:18: error: case value
evaluates to -1, which cannot be narrowed to type 'size_t' (aka
'unsigned long') [-Wc++11-narrowing]
case -1:
^
/root/llvm/src/ldc/dmd2/func.c:632:22: error: case value
evaluates to -2, which cannot be narrowed to type 'size_t' (aka
'unsigned long') [-Wc++11-narrowing]
case -2:
^
/root/llvm/src/ldc/dmd2/func.c:629:22: error: case value
evaluates to -1, which cannot be narrowed to type 'size_t' (aka
'unsigned long') [-Wc++11-narrowing]
case -1:
