Bug 13874 – Invalid FunctionTypeOf segfault the compiler

The following code crashes the compiler: ```` import std.traits : FunctionTypeOf; enum DummyEnum; static assert(!is(FunctionTypeOf!DummyEnum)); ```` % ./projects/dlang/dmd/src/dmd segv.d [3] 8952 segmentation fault (core dumped) Valgrind believes it's a stack overflow: ==8964== Stack overflow in thread 1: can't grow stack to 0xffe801f1c ==8964== ==8964== Process terminating with default action of signal 11 (SIGSEGV): dumping core ==8964== Access not within mapped region at address 0xFFE801F1C ==8964== at 0x411591: TypeEnum::getProperty(Loc, Identifier*, int) (in /mnt/shared/projects/dlang/dmd/src/dmd) Tested with dmd 2.066.1 & master (v2.067-devel-1b8db26).

Commits pushed to master at https://github.com/D-Programming-Language/dmd https://github.com/D-Programming-Language/dmd/commit/1508918c64fdd1594400bcf1eee9f82c24a64bd3 fix Issue 13874 - Invalid FunctionTypeOf segfault the compiler https://github.com/D-Programming-Language/dmd/commit/b33b4ca2f487bb8a45df4366fec6b08f5fd086d3 Merge pull request #4313 from 9rnsr/fix13874 Issue 13874 - Invalid FunctionTypeOf segfault the compiler